I want to start off saying that I think this is a good picture. I want that to be absolutely clear as I state what I see that's bothering me. I also want it to be clear that I believe that those who go into detail about what they like and don't like about a piece of work is a compliment worth so much more than "oh my gursh, I luv dis so much!" That being said:



I took me awhile to realize that you do have clear outlines. They just appear to be jagged due to the colors not being "within the lines," and a few of the lines not being either cleanly curved or uniformly straight. The splotchy-ness has its own style of appeal, but I think it's just ruining the uniformity of the picture for me. As for the curves and lines, that's something that practice and experience can resolve, so I won't complain about that too much.

I'm used to pictures with a bit of depth to them, so the lack of shading (aside from the lines underneath their chins) was also something that threw me off. That's a personal problem on my part, though, so that's not something you should take any sort of offense to. I'm the problem there. If you could find a way to significantly darken the colors where you're shading, though, I think that would be much more effective than just black lines. If the program you're using doesn't allow for that, then just keep working with what you've got.