I'd take him back to jumping cross rails in easy combinations. He's very clumsy over the jumps, which is to be expected of a young horse just starting- but now is the time to make it a good learning experience and teach him how to use himself, start to figure out strides, etc. I'd leave out verticals and cross country jumps all together right now. I think you're putting yourself in an incredibly dangerous position jumping a young, inexperienced horse who's clumsy with his legs over solid fences, especially without a helmet, and I really hope you take some of the advice here and slow down a little bit. Your horse is very cute! And I think progressing at a better, easier speed will really prolong his career. It's very easy to sour a young horse with too much work like this.
A perfect example is a horse I was leasing before I purchased Jackson. She was five when I brought her home, already beautifully trained and jumping lovely rounds, but she was SO soured, she's cycled through four or so homes, all who were working with good, reputable trainers, but she's gone from a sweet sweet horse to an absolute brat, she HATES jumping, where she was an otherwise willing and (according to my coach, who knew her when she was in training) happy jumper.