Here are the things I noticed. I really need to bend my elbows and shorten my reins, also my arms are a little stiff and low. Yes he did break gait after the lengthened canter, but that's solved now. The second transition from canter to trot didn't go so well because he wouldn't trot. That's also resolved. We definitely could have lengthened more but oh well!
Sorry about the poor quality video, it was taken with my mom's blackberry.