I have gone Craftsy and I am "That's Artrageous"!
If you have not discovered Craftsy it is a download site with patterns and instructions and all sorts of fun things to do for Craftsy people in this world.
It is a recent discovery for me and I am enjoying being creative.
Have you discovered direct print to fabric?
I have been playing with the idea and the project I uploaded to Craftsy is one that can be printed directly on cotton fabric (use the lighter colors for the black ink). The bag you make could be just like this one.