Slick gameplay!!
I love the vibe of this.
A few things;
I'm able to die at the tutorial. If I die at the tutorial,
I get sent back to the very start of the tutorial; which is pretty annoying, and could be a dealbreaker for someone wanting to really get into the game.
2nd; some more sounds (jump, skateboard, etc)
finally, some light animation in the backgrounds could be slick.
Hope to see more of this.
Great work!