Here is my 13 year old OTTB gelding. I got him early this year as a barrel horse prospect from a dealer long story short I found his old owners who didn't know even he was missing and now I have a hunter jumper lol. I know he needs weight but we are working on it. When I got him he was just over 900 now he is 1125.
Better photos needed for a critique. He looks to be standing very awkward and camped out in the profile shot, but I don't think that is his normal stance based on some of the other photos. If that is how he often stands I would suggest getting a chiropractor to adjust him as he looks uncomfortable.