I like the concept of this game, but I think it could use a few tweaks: I would include some instructions about to shrinking power up, you mentioned trying to stay small in the description, but no mention of how to actually do that. I would also make the enemies, projectiles, and power-ups stand out more against the background so they are more noticeable, and lastly I would make the shrinking power-up appear more often. When you get too large, there's nothing you can do to dodge bullets and without a power-up on the map, you can shrink to fix that. I really like the concept and the artwork though!