Unfortunately my internet is very slow and I was only able to watch portions of the videos, so I can only critique the bits I saw.
As was already stated, your leg needs to be back a little more. I completely understand the saddle thing; that's what my own saddle does and it's absolutely horrible and impossible to ride in but I just try to work around it as absolutely nothing fits my mare... You could also have a bit more bend in your elbow in some spots. You look like you have a very long torso so I understand where that would be difficult, but relaxing through your arm a little more would help you flow better with the horse. You also looked like you got bounced around a little at the trot so try holding the "down" part of your post a hair longer.
Overall, very nice job. You've made a lot of progress and he moves quite nicely. LOVE the name by the way! :)
Worth The Wait <3