My horse has developed a bad habit of dropping her shoulder while turning. I had a friend watch me ride and she figures it is the way I am sitting in the saddle ( a little off to the left ) I have tried to adjust my seat so I am sitting correctly but it is very hard for me to tell as I feel like I am sitting properly. I need to coach to help me with that but for the time being I need some help to get my mare to stop dropping her shoulder. Yesterday I worked her in the paddock for about 20 minutes and had her canter the circle but as we come into the corner and I ask for a turn she drops that shoulder. I pushed her over with my leg and directed her with my rein and she did better but she still dropped it slighty. After this I took her out for a ride. While out in the field I had her in a canter and asked for a turn to the right, she dropped that shoulder and it felt like she was going down she dropped it so far. Great for a barrel horse I suppose becuase the turn was very sharp but not what I asked for. Please give me some other suggestions. I do plan on taking more lessons to hlep me and her but for the time being what can I do at home?