What you need:
- plain tote bag
- pencil and fabricolor pens
Decide what you want to draw on your tote bag. The simpler, the better, unless you're Picasso. I pick black and white Totoro since I only have black pens.
Put a magazine in the tote bag and start drawing. Use pencil for the sketch, and use technicolor pens for the outline & coloring.
Iron the tote bag to make the ink permanent & washable. And voila, it's done!