If you’re going to try the scissor route, I recommend you aim for messed up. Like anime style, lots of different lengths going lots of directions. Then you might actually do something nifty. If you try to do anything even or any fades, you’ll have a very hard time.
I shave my head daily in the shower. It feels good, requires no mirror, and always looks consistent. Have been doing it for years.
Alan Parsons Project - Eye in the Sky.