I did a lot of work on this one, and it marks my first comic that is in color. There was a ton of artifacting in the backgrounds, so I eventually just replaced the backgrounds in each panel with a solid color that I think more or less looks like the original. Pretty pleased with how this came out.
Hm, Hobbes's size in panels 5-7 seems off, like he's miniature and floating.
If Calvin has a shadow in a panel, Hobbes should have one in that same panel.
Also upon closer inspection panel 1 has a disembodied Hobbes tail around Calvin.