hi! the lines are really cute, however the American Quarter Horse is a bit stockier in the rear and shoulders and is slightly built "downhill" like this one :3

since the competition was specifically for quarter horses/appendix/quarter pony lines ^-^ i thought maybe this ref would be more helpful than the cantering quarter horse, since of course its a different motion <3 the downhill build isnt as important bc of the position but the conformation is a little more important ~
nonethless im excited <33