Oh no worries.
I was almost sure the reason was perspective, but that's not something I'm great at in the first place.
You pulled it off 1000% better than I could've, taking into consideration I can't/don't paint.
I've been trying to do a picture with a first person view of someone reasching up to the sky. Naturall their lower arm is going to be the widest part even though 'normally' the hand would be. It's just because it's closer that it's bigger.
Grats on daily deviation by the way. If it weren't for that I may have never seen your gallery. Either way the painting is superb.