So uhh, this is my first serious attempt at pixel art, and it took me around 8 hours to finish this. The artwork I based on is "Marceline and SImon" by Blindconcept on deviantART.
I actually want to get some really constructive critiscm since I want to improve on this. (Like what areas whould I improve on, and on what should I change).
I wanno post ASAP on the forums so that I can get more advice, but since I just registered, I can't. :P
So, anyway, I hope to hear what you guys think! | 
this part of the story made me so dang sad. Poor Marceline.
I just wanted to let you know that it looks pretty decent! The only thing I might work on more is the dithering, or the shading and transition from one color to the next.