Actually got round to using some of the free images that come in the centre of "Simply Cards" magazine. I really liked these ones by David Parkins and they were lots of fun to colour in too!
I love my copics, but it's just so much easier to use watercolour pencils...
If you missed the mag and would like the images, I could always send you a scan. :)
http://www.simplycardsmag.com/
http://www.davidparkins.com/blog.htm