Every cartoon needs an outline. It seperates the bodyparts from eachother. Imagine two bodyparts with the same color without outlines crossing eachother. say two arms crossing each oter, it would just look like an X.
Ill give you some examples:
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You see how they all have outlines? Outlines is what you have before you colorize a pic, and you don't colorize ontop of the outline, but within. It makes the pic tidy and proportional. Unless you put shades or bevell and emboss on each colorized layer, you need outlines.
besides that. I like your pic though. Clear colors
