Hi and welcome! Very cool that you're supportive of his snowboarding
I noticed the same things as Varza. Also that he doesn't have his weight centered at times.
More lessons is the best option. In the meantime, I'd suggest having a look at Jed's videos to show where he can progress from here, proper form, etc. http://www.snowboardingforum.com/tip...o-lessons.html
Plus Jed has rad snowball-wielding ninjas in his logo ha. Who doesn't love ninjas
Good luck! Keep us posted.