First of all, I'm going to have to disagree with some of the other posters, I think his front end form is good; even excellent in some of the photos. In photo 4 and 5, he has taken off from a longish spot and is reaching for the fence, which results in his cannons being ahead of the vertical. It also tends to flatten his arc. Pretty forgivable for a young greenie, particularly when it's clear from photos 1, 2 and 6 that he's capable of snapping those knees up nice and tight and rounding prettily.
All the photos give an impression of energy and speed; I suspect this pony has a lot of motor to the fences and prefers the longish spot because it's less work.
If he were my project pony, I'd do a lot of low grids and gymnastics with him to improve his form, get him to more appropriate distances and to rely on his rider less. His eventual rider isn't going to be as skillful as you; he needs to learn to find his way to the fences on his own.
You're doing a *terrific* job adapting your form to a small pony and staying out of his way. I have two suggestions for you - one, drop your crest release down a couple of inches to the ridge of muscle on his neck. Making less of a broken line from bit to elbow will allow you to use a smaller release and still be tactful and forgiving; and the smaller release will help you keep your upper body up and away from his neck. The challenge in riding something this small for you is not weighting the front end.
Second suggestion - (please don't laugh!) When you're schooling this pony, ride more like a beginner! Now that you've got him going so well; get him ready for his next rider. Drop the reins and kick him through some gymnastics; try and jump an 18" course in two point, steering with loose reins. That's what the 8 year old who will ride him next will need!
Cute pony, and awesome job by his rider!