The graphics are nice, but i didn't understand the gameplay. I think they should have made a tutorial level instead of a big tutorial text. And, instead of levels, the concept of Jem is more suited to the arcade mode. It would have saved you time.
I get the idea, it's cool. But the implementation didn't let me enjoy it.
From what I feel you are just at the beginning of your journey and I believe you will do well! If you want, you can watch our game.