It was a scorching hot day today, and I had my usual lesson with sunny, who's usually very good. Today I noticed that she was sooo impatient. I could barely slow her down. So then I was put behind someone else, and she was okay, but eager to overtake the one in front. When we were asked to trot solo at the end, she went straight into canter, and would NOT stop, untill she joined the back of the ride. I've had very limited experience of canter, but during that brief canter, I think I developed a seat for it (wasn't boncing or sliding, like before), so that was one good outcome, but for future reference, how can I slow the horse down effectively?
(btw, my stirrups felt really wierd that day, and kept slipping, which they haven't done before...)