I feel as though it's let down by the use of one image tiled repeatedly, i can map out where each tile begins and where it ends due to the noticeable vertical and horizontal cut off points. Feels as though more effort could be put into that aspect of the piece.
If you made a collage of different characters that filled the entire underlay with no cut off points it would look a whole lot better. As a whole the idea isn't bad, just needs more work and effort put into it for it to be top quality.