It feels like you left a ton of space (1 layer) between the star next to Kirby and the actual background. Instead of placing some of the stars on the same layer as kirby, you should have considered placing them in-between the different layers for a better use of depth between paper.

If you hadn't noticed, it's me, lol... Misha from Hatena. If you could respond on my last art on my account here before I clear it from my gallery, that would be great, haha. I'm deleting all my art 'cause my art style changed drastically. (I no longer do 'stretched-out' faces. I am closer to realism than ever before!)

Just saying also, this inspired me to want to draw Kirby myself! Haha, thanks my good sir, now I know what to draw! c: