I would also like to add, that imo, you need a bigger release. Not HUGE but bigger. It almost looks like to me in your pictures, that you are almost sitting? I don't know how to explain it (sorry!). You have a very nice "root system" (I like to call it, meaning you have strong legs) so you should be able to release a little more.
^^ That's my personal opinion of what is the perfect release, perfect jumping position, and perfect lines. I try to base my equitation off of a position like that!