I took on a personal challenge this morning: take an NES sprite, double it in size, and 'remaster' it. I settled on 'remastering' a sprite of Chip from the two Rescue Rangers games released on the NES.
I had to expand the height a bit to make the anatomy less wonky on the 'remaster'. I also went with show-accurate colors rather than NES-accurate colors (which made getting the details right all the harder). It ain't perfect, but I didn't make this to win awards.
STATS: About two hours, 18 colors (17 + transparency).
I welcome (and encourage) comments and criticism.