Lengthen your stirrups. Like two holes! You're riding western, girl! ;)
You look well balanced, though. But you look like you're riding English in a western saddle.
I really wouldn't be jumping a whole lot in a western saddle, but since you said you ride both I assume you usually jump in your English saddle? And with jumps that little you should be fine, but don't go any bigger in that saddle. It really sucks when your horse over jumps and you get a saddle horn to the stomach! (I know from experience)! Plus you can't get a proper two-point in.
I like your horse! I wanna see some more jumping pics too! :)