Was he ridden another discipline previously? Perhaps western pleasure?
I ask because he's pretty seriously behind the bit. Even in the free walk photos, where he should be strecthing forward and down, he's keeping his nose tucked well behind the vertical. The best photo is the third photo, but even in that one, he's slightly behind the vertical and the contact is tentative at best.
In none of the photos is he reaching up under himself correctly from behind.
I would forget about riding tests for a while and work on freely forward, and once you have forward well established, reintroduce contact, making sure to keep the forward. He strikes as being a tricky horse to ride correctly as he'll probably have a tendency to go behind the bit very easily.
Agree with the earlier comment about dropping your stirrup a hole.
He is an eye-catching, flashy horse, beautifully turned out and presented.