I was diagnosed with scoliosis when I was 11 years old. I started eventing training at 16 years old (3 years ago) and I noticed in pictures in videos that I lean to my right side. When I am on my horse I feel perfectly straight but my trainer is always yelling at me to lift my shoulder up and scoot myself to the left. I have also noticed that my horse now doesn't want to canter on the right lead. I believe it is because I am throwing him off balance since I am crooked. Any advice? Does anybody else have scoliosis?