Gameplay 4/5 - It was fun, and I'm not generally a fan of bullet-hell type games. The drawing mechanic was very fun. My one complaint was it felt a little too easy, I never ran out of the stardust I needed to keep drawing and I ended up beating Normal difficulty on the first try.
Creativity 4/5 - Again the drawing adds a lot to elevate this above a typical game. It almost feels like a magic system and it works really well.
Art Style 3/5 - It was fine. I could tell the monsters apart easily and the player character/telescope looked good. The pixel art style leads to a lot of the effects looking like oversized pixels floating or bouncing around which adds a lot of visual clutter.
Audio 4/5 - Again the music was fine, it did its job but I wouldn't try to download it to listen to later either. The sounds effects were good and fit the theme well but they did sounds a bit like they went through a low-pass filter. Not sure if that was intentional or not.
Theme 5/5 - Straightforward but great take on the theme.