An interesting concept and definitely an original take on the theme, as I didn't notice any other ice skating games. Couple of improvements:
I think you should replace the "How To Play?" button with a screen appearing after you click play that explains the controls. It's hard to grasp the controls by oneself, so clicking the button is mandatory anyway.
I would definitely like to see the trick mechanic improved upon, because for now it's only a matter of clicking one button in the correct time and there isn't any visual feedback.
It's definitely not something I would have expected to see in a game jam, but if you wanted to work on the game after this jam, I think that adding a leaderboard with highest scores could go a long way.
Overall, I think you made a very strong basis for an interesting game as I liked the movement mechanics a lot after getting used to them. Adding music, animations, and more tricks could definitely make this an amazing game. Good luck on your future projects!