Now I am late to the party...

I think there is something wrong with the shoulders. The bow shoulder seems to be pulled around and the release arm tucked. Apparently it is legitimate to have an unballanced back tension with a compound, but I don't know what it is supposed to look like, and after years of shooting recurves etc... I don't want two forms. If that is what you want, then you need to work on your back tension, and that would be near the top of my list.

I'm not a coach like some of these other guys, and while I see the connection between the lean, and being overbowed, I don't see the connection between that and draw length. I wasn't sure because it looked to me as though your right shoulder isn't all the way back (and your bow arm is bent), but I can't get a clear view of it to tell. If you were shooting for 90 m as per the coach's quip, obviously your right arm elevation would show it, and abscent that, a lean actually robs you of draw length, just as shooting down out of a stand can shorten length (if accompanied by inadequate bend at the waist). But I am not contradicting the consensus, since perhaps this body position is a tell to the more experienced.

Right arm bend looks fine to me on a high let off compound. If you are shooting for hunting and wear lots of clothes, the more the merrier.

I don't much like the look of your grip. I am not saying it is wrong, it is just my prefrence to accompany a bent elbow with a low grip. What the manufacturers, and Mathews in particular seem to be doing is providing the much vaunted "narrow throat" along with a crappy "feels good" grip lower down. This means the only torque free position is sort of high wrist. This looks like it is straining your bow arm. Get a real low grip like a Shrewd Precision, or alter the wood on your Mathews to get a real low grip where the pressure point lies more in line with the arm. The Shrewd low is about the same angle as the front of the riser, which is real low. The Shrewd medium is less extreme, but still low enough. I shoot the low with my fingers outside, so you might like that also.