Okay, I'm 5'8 and the pony I'm riding is 13.1 hh so I have to be very careful to balance my weight on her when we are jumping because I school her 3'6, but this jump is only 2'6. Anyways, if my weight is more one way than another I'll cause her to hit it. I was looking at this pic and realized that my body is a perfect question mark, haha.
With the help of Paint
In my defense, I know I need to bring my shoulders back, but I brok and dislocated my left shoulder and had to have 2 surgeries so since then I have had problems getting my shoulders back.