Thanks, Maura. That is what I think is wrong, it seems my ankles are all sticking out and not on the horse.
Maybe I am gripping with my knees? I didn't feel too nervous, but I'm sure I was, a little. Baloo was nervous, he ended up having a bucking tantrum at the canter. Not very "pleasurable"." Silly boy.
Val, he is a AQHA quarter horse. You can't quite see, but he totally has a quarter horse butt :).