The art style is super nice, the game is really pretty and cute and the animations are wonderful.
the movement is floaty - in games like this having precise movement is really important, the player need to maneuver between projectiles and enemies and you want the character to move exactly to where the player wants her to be.
also you can add more feedback to the main player actions: shooting and moving, make them pop with screen shake, particles and sound.
very cute game, nice work!