Very nice!

I really like the linework and the concept of this. Some things that are not good: the wash of dark colour makes the leg/arm at the back very difficult to see, so many people looking at this may not even notice those limbs.

In the future, you can try colouring drawings digitally. First scan them in in black & white (this will also make any blue pencil lines invisible), then make the "white" colour transparent (you can do this in the free GIMP program, for example), then import that as a layer into a painting program, make a layer underneath the black lines and paint on that layer.

I personally use ArtRage for painting, as I find it to be very intuitive and it's easy to make it look like "natural" paints. (though in the free version of the program, you can only work on one layer) My Flash film "One Quiet Winter Night" was painted in ArtRage, for example.