It's a huge image.
http://imgur.com/dUQ6SDv
edit: Yeah it kind of sucks but it was an exercise with using as little black lines as possible. :3
Did you make this in photoshop or with real colours? Looks like potoshop to me.
It is very difficult to draw a picture with coloured areas but without outlines. It needs a lot of practice. It's easier to draw some sketch lines (any way you want, either directly in photoshop or on paper, in which case you must knock out the bacground of the outlines). Then open them with photoshop, remove the "background layer" tag of the layer, create a new one, and put it UNDER the outlines layer. Now you can draw on the new, lower layer, and the outlines will always be over your colour. If your outlines are rather thick and you need to know where you colours stop under the lines, reduce the density of your sketch layer. Once you are done check the outline layer as invisible and there you go.