I liked the painted leaves so much that I used the idea as Christmas cards last year. I first ironed the leaves with a steam iron between 2 layers of cotton, then painted them and afterwards covered them in a layer of paverpol (something I think similar to modge podge). I wrapped cotton string around the stems and attached a small card to write on.
Really nice when visiting friends and see one of these hanging somewhere!
Thanks again EenigWonen for this great idea!