Frustrated with inability to do body work!

A couple observations, you could use tape to establish your lines uniformly on both sides. I use a sanding product called Abranet with blocks through 400 and block with 800 up wet. Use guide coat. It looks to me like you are ready for some epoxy primer too. Don't press too hard on your blocks. And lastly, a year from now even you won't see it.
Best of luck, you are doing good work.