You do not lack imagination cadence- it's in there somewhere.

Maybe start out by coming up with your wildest fantasies, & edit them into r/l.

Discipline doesn't have to be all about physical punishment, it can be in the form of structure, daily or weekly rituals, etc etc.

A simple one I used with my first girl was just chatting to begin with, then asking her to put her collar on for me. Once she'd done that up, she was mine until I gave permission to take it off.

Everyone I've ever played with was completely different. I had to change my style & do different things- a big part of the fun is coming up with the details.