Extended trot would have been perfect if someone had said "Shoulders Back" . My elbows would have gone back into position and she would have lightened up on the forehand even more.
I never go into canter by trotting so fast she has no choice. I always ensure she is well balanced in a collected trot before the canter transition. I even throw in at least one walk to canter transition.
|First Canter Stride (from walk I believe)|
|... and I fell apart|
Notes: Keep my shoulders back at all times. Try to transition down just before I\we fall apart. Be even more clear with the upwards transition - tap with whip if need be. Turn my shoulders, not my head, to the outside every single time I ask for canter to ensure she steps into the correct lead.