we did this with Ji about a year ago and i use the bag for grocery shopping every week ;)!
- have your child draw a design, 
- pen and paper, 
- craft foam paper, 
- piece of cardboard, 
- piece of fabric, 
- fabric paint 
- roller or a sponge 
directions:
1. trace drawing onto craft foam paper     
- first trace the original drawing onto another 
piece of paper, then trace onto the foam paper 
making sure it indents through onto the foam, 
btw - the paper will tear...                                  
2. cut out and glue onto cardboard                
3. using roller or sponge apply fabric paint to the stamp
5. and you do the sewing ;)
p.s.  it's supposed to be a flower :)
at first he drew one stem, then he looked at it, drew another, 
looked at it again and said "and now i need to connect it here..." 
it was so cute to watch him draw it:)
it reminds me of a little cloud with a ladder.