With my lack of any real life experience in sceneing I am gonna toss my hat into this.

The simplest that I can say is just do what feels right. Know what you and your partner both like and then just go nuts. Move from one activity to the other, if a break from the intensity is needed take one as you prepare for the next or bind them all together and just have one long night of pleasure.

The next one is slightly more complex. Choose a list of activities that you want to do that night. Do not assign them an order but numbering them could be useful. Then choose one at random and start there, moveing from one activity to the next, and once again enjoy yoruselves. If you miss an activity forget about it. Don't worry and don't stress.