Videos are better than still pictures, but there is so much we can't see.
However, one little thing that I see is much like McDave posted and that is you bow hand seems to be positioned a little differently on each shot, especially the first shot. Also, the fingers not holding the bow seem stiff which is a sign of misplaced muscle tension in your bow hand.
It's just a little detail. It may not mean much in your overall form. Consistent anchors, alignment and follow through are much more important.
Also, when you compare where the bow and your draw elbow are at the moment of release, I think that I'm seeing some difference in how far you are drawing. Not much, but it will matter as distance increases. This is related to alignment at the moment of release. You are shooting pretty fast so it's difficult to be consistent with that. It might help to slow down in practice and put a mirror over your bale so that you can see your alignment. You may only need to go slow until you get a feel for repeatable alignment. Many archers seem to shoot better if they establish alignment and anchors for a couple of seconds before releasing. Others can do it more quickly. But it is usually better to go slow until you have it ingrained pretty well.
Hope this helps,
Allen