i like your grass, what kind of lawnmower do you use? :)
oh, and as mentioned earlier, don't use that much slow-mo, and consider using it only for real baller parts/tricks
and really focus on holding the cam as steady as possible!
and just keep filming, keep editing and everytime you'll learn something new!
also don't be afraid to try new things in your edits, look on the internet how to do some effects with your editing program and give it a go!
Good luck !
and for your tramp skills, i'm no expert, but i felt as if you initiated your spins/flips too early, you started coiling up your body too soon....
but i'm no expert :)