Punishment. in my opinion, falls into two catagories. Discipline and correction. Both of these have many shades and degrees. The diffenrce can be as simple as the Dom/mies tone of voice and the reason for the punishment.

Example: In a playful mood I pull my sub over my lap and paddle her ass becuase she was being a brat. My words to her are stern but not angry or loud. The spanking is to make a point not to hurt or scare her. Thats mild, playful discipline.

But if instead my sub were to break a rule that I had set. I could put her in the same position but with a raised voice, harsh words, a touch of anger and much harsher spanking and its no longer simple Discipline its now correction. Even if she likes spanking she will not see this as a fun or repeatable experince.

Much of it is not doing something your sub likes to make a point. If she does not like getting spanked in a blindfold then add one. <assuming of course its not something that would freak her out totally. Like a hard limit.> The idea is to make the experience something she does not ever wish to repeat.

It can be as simple as standing with her face in a corner like a little girl with her panties around her ankles. just what ever makes the punishment umpleasent