RE: Feedback on my form updated...
Look at your own picture. See the knuckle of your index finger under your ear? Well, you need to shorten up enough that the next joint is where that one is or maybe a hair shorter than that. A shorter release would help you by leaps and bounds. I think the bow is about 1/2"-3/4" too long, but most of your "overstretching" is from the bowstring back through the right arm, meaning release and maybe the loop (can't see it that well). Right now the net effect of everything is that you are overstretched by about 2".
The bowhand does look better, by the way.
And please don't takethis personal, but your situation is very common.