ohhhh- I just downloaded toca tailor to my iphone- don't know why it has taken me sooo long to find this kinda thing.
Anyway, my little girl has been fiddling through it- so she can help design clothes for herself. i think there is an option to take pics of certain fabrics/paper, so that you can get images 'just so'.
It may be a good answer for my fussy kiddo.
xoxx s