I only had time to look at the first one where you're trotting. It's a little dark, but from what I can see, it looks good. Your contact is consistent, you don't overbend him on circles. You're looking straight through his ears and keeping him nice and "straight" on the circle. If I had to pick on something, I'd say it was not enough impulsion. Since you already have the relaxation and contact part down, I'm thinking start working on transitions within the trot. At any given stride, your horse should be ready to give you more trot within a single step. Maybe do working trot down the long side, shorten it on the short side and then ask for working trot again down the next long side. The bottom line is, when you ask for more impulsion, he should deliver. It's all best done under the supervision of an instructor so you don't accidentally throw him off balance and onto his forehand. That's my 2 cents for now.