Thanks for adding more to your story. In the absence of Pejanon, I am going to review this for you.

“Yes!”

“OK. But we need to buy something first. Let's go.”

Rebecca and Emma left the café and went to the next bus stop. During the ride Rebecca kept on asking Emma what she wanted to buy.( a comma would be fine here, making one sentence.) But all that she got from Emma was “You'll see.”

After some time they arrived at a big hardware store. “I don't have enough stuff at home, we need to buy some in order to arrange your first attempt worthy.” (the word worthy is not needed here)Emma explained the stop.

Rebecca nervously followed Emma through the maze of shelfs. (shelves)They stopped several times at different points where chains, ropes, locks and all that stuff Emma deemed necessary was located. This all took quite some time. Finally they were out of the store.

“Rebecca, get us a cab, I'll fetch something to drink for us.” Emma ordered. Emma couldn't even say yes, as Emma was gone already.

Emma noticed that Rebecca's nervousness grew only more during the cab ride. After they arrived at her flat she tried to put Rebecca at ease. So( It would sound better to join these two sentences) she opened a bottle of chilled white wine for them. They chatted over the bottle and when it was finished Emma asked suddenly: “Should we start?” Immediately a shiver ran down Rebecca's spine. (always put new conversation in a new paragraph and okay needs a comma after it and a small s for she) “Um, Okay.” She said.

“Well then let's start. Strip!”

Rebecca hesitated a few seconds, so that Emma had to repeat her order. Slowly Rebecca stood up and peeled of her top. She threw it over her vacant armchair.(Join these two sentences together, changing the first but to than) But then picked it up and draped it nervously but carefully over the backrest. Next she stepped out of her shoes. After a short glance at Emma she opened her skirt, and let it drop to put it on the armchairs backrest too.

Again she hesitated when she stood in only bra and panties. “All of it!” Emma ordered briefly. So Rebecca slowly dropped her bra and panties. She looked at Emma and could see that she eyed her from top to bottom. Obviously she liked what she saw.

Eventually Emma stood up and went to get the shopping bag. She returned with the goods and a knife she got from her kitchen. “Today we'll try just a little hog tie”. ( replace the full stop with a comma and put a small s for she.)She said while cutting some pieces from that long coil of cotton rope they purchased earlier. Seeing Rebecca's puzzled expression she added: “Oh, don't worry( put a comma here) you'll see what it is.” Then Emma pulled her victims (victim's) arms behind her back.

Rebecca shivered when she felt the ropes wind around her wrists. Emma wrapped them in a few more turns of rope then she did Rebecca's elbows, knees and ankles in the same fashion.

All the time while being wrapped ( put a comma after time and another after rope) in rope Rebecca felt her excitement grow and grow. She could feel the heat rise between her legs. Even Emma took notice of this while helping Rebecca lay down. She could literally smell Rebecca.

Emma couldn't resist and stroked Rebecca's perfect ass longingly. That raised Rebecca's excitement even more, so that she gave a low moan. After a few seconds of this Emma finished the hog tie by tying Rebecca's bound arms and wrists not to tight (too tightly)together.

“Can you bear that?” Emma asked.

“Yes, it seems to be tolerable. What now?”

“I'm nearly finished” Emma said grinning. She removed her scarf and tied it over Rebecca's eyes.

“What are you doing? I want to see you.”(this needs to be on a new line and it would flow better to make the next two sentences one) “I like my damsels blind. So they can concentrate better on what is going on.” Emma said while hiking up her skirt. Then she stripped off her panties, what(which) Emma of course couldn't see. When Rebecca started a second try to protest Emma took the advantage and packed the panties in Rebecca's mouth. “...And I like them mute too.” Emma said with a (an)audible smirk in her voice.

Next there was a ripping sound and Rebecca could feel an adhesive tape sealing her lips. Earlier in the store she had wondered for what Emma would need this.( take out "for" and put it at the end of the sentence) Now, she had the answer. And there was something else, Rebecca could taste a sweetness as she chewed on the panties. Emma must like this too, she thought.

Again Emma started to caress Rebecca's body. First her sides then her ass again. Rebecca couldn't help but enjoy Emma's ministrations. She moaned loudly. Next Emma turned Rebecca on her side. Now Emma was caressing Emma (Rebecca) everywhere. She suckled her nipples, and kissed her everywhere. ( you used everywhere two times close together, maybe try other words like "all over")

After a few minutes Rebecca felt like drifting in the air. She wished Emma wouldn't neglect her overflowing pussy much longer. And finally Emma reached it. After a few long strokes. She worked on the clit. (these sentences would be better joined - eg Finally Emma touched her clit, licking it with long, teasing strokes. )It took Emma only a short while to bring Rebecca to a mind-shattering orgasm. It was so intense that Rebecca was in a deep daze.

“Hmm, you really like this.” Emma said smirking. “I will let you relax for a bit, just enjoy the experience.”

After letting her rest in bondage for a few hours, Emma untied Rebecca. It was dark outside already. Rebecca noticed that the session had to have lasted for some hours. Emma had prepared a bath for Rebecca. Emma helped her friend in the tub and let her soak.

Rebecca relaxed and enjoyed the bath. 'What a day!' Rebecca thought. That's what brought her in Emma's tub.

A few minutes later Emma returned. She hid something in her hands behind her back. It made a jingling sound. “I have a present for you. It's for your bondage graduation, so to say. Close your eyes.” Rebecca did, though she wondered what that sound was. Emma dug up her present from behind her back. Rebecca felt a stiff flat belt like thing rounding her throat. Then there was soft click.

“Ok. Open!” Emma said, passing her captive a mirror. Rebecca looked in the mirror, she saw a collar with a chain already padlocked to a d-ring in front of it. That's where the sound came from. The chain led to Emma's bedroom. Rebecca felt for her new jewellery. There was a second lock on her neck, so she couldn't remove the collar without Emma's help.

“When did you get this thing?” Rebecca asked.

“There was a small pet store next to the market where I bought our drinks while you were waiting for a cab. I bought a matching leash for you too.”

Just when Rebecca wanted to protest Emma tugged her forward with the chain to kiss her. Rebecca melted into Emma's lips. After some serous tongue smacking Emma finally pulled back. “Ok. Let's finish you up here. Then you can show your mistress how thankful you are for your funny afternoon.”( I think you might have meant to say fun and not funny)

Overall, this is a great effort. You have created an interesting story line and I did like the ending. I would like you to redo this piece with the suggested changes.

Thanks for a great job
Aussiegirl ( temporary level one instructor, and level two instructor)