First time changing a diaper was NOT what I expected
Dude. Nobody tells you about the projectile poop situation. I thought I was ready. I was not ready. My son managed to get it everywhere except actually in the diaper. I'm standing there covered and he's just looking at me like it's no big deal. My wife found me in the bathroom trying to figure out if I needed a whole new outfit and just laughed. This parenting thing is wild.
Honestly changing diapers gets easier way faster than you'd think. In like a week you'll be one-handing it. Just give it time and don't stress about the catastrophes.