Congrats on your first game! It is very cute and fun to play. One issue was it was hard to tell sometimes if I was moving fast enough to squish the monsters.
My main issue though was it was difficult to get used to the controls. I often when (re)starting a level I'd turn the planet the wrong direction and get the ballies killed :(. Maybe instead of showing the arrows on the sides, you place them where the frame of reference should be. If you don't know what I mean, left and right rotation mean opposite things if you're talking about rotating the top of the planet vs the bottom of the planet. Makes it hard to internalize the directions.