Do you have any suggestions or exercises on how to fix upper body posture in the saddle? I tend to arch my back, which makes me really unstable .

For straightening my back I take my crop and put it behind my back and trough my arms. For balance I do a lot of two pointing, standing up straight in my stirrups, and no stirrups work.
Join the fun and sign up to connect with our 200,000 members!