Maybe some puff ink for Rupert!

Is it supposed to say something?

looks like you covered something important in the design with the shirt color options.

This reminds me of the children's book in which the child has a purple crayon and he draws his adventures on the wall. You don't know the adventures are his drawings until the end, when it shows him like this girl, holding the purple crayon and walking along the wall.

^Harold and the Purple Crayon ^_^

I really like the girl, but the friend isn't quite right.

Rubpert's e imaginary friend of the little girl? Actually its fine but i think it would look better if the lil girl and rupert are both done by the same media, and both coloured/uncoloured/partly-coloured.

just some opinions of mine :)

Needs a bit more work??

I like the transitioning you used, how the front image carries over to the back.

Good work.

I like the drawing, nice werk!