well made, good polish but really lacks a volume control. if you add sounds to your game, you must implement at least some form of control over its volume. art is good, cant really point out anything bad about it. Your puzzle design i think is good, but imo the idea itself is weak. But it is hard to make a good puzzle game, so dont worry about, just go on and make another game, you are capable of making a quality game, just make more games in different genres try to find what you like to make + what people like