Here's my critiques....(mind you that I am not very good at this lol)
At this angle, the horse seems to be heavier fronted. Which makes the body look off-balanced.
Also, I noticed high withers....Blu has that a little too....and he looks sloping on the legs. Like he is rocking back. Seems to have long pasturns, therefore, sinking.
Hope this wasn't too harsh or anything!
Just a critique. Overall he is a very nice looking horse in my opinion!