It's a while since I've done any pixelart until recently I hosted 2 collaborations with some friends from drawception, both were based on the pixelation hexquisite corpses.
This is the first one, we used Dawnbringer's 16 colour palette for this one.
Here is the map of contributers and the finished collaboration:
https://i.imgur.com/vphrRwJ.png
https://i.imgur.com/sDerCd1.png | 
The way you did the blue backlighting on the front brain/muffin character is excellent! I love the detail on the character in back too. He looks like a demented Thomas the Train character.
. And it's nice to see stars given detail and not just be left as a single pixel. Great work!