Sorry for the double post, just realized the reply
Cheers! I drew that out by hand on Photoshop by hand. Took me about 30 minutes to do the entire thing. Photoshop Elements 7 too. I love using Photoshop to design stuff. The background was based on an image I found on Google, I drew a shape like it on PSE, coloured it in, blurred it (separate layer to the picture) and then desaturated it slightly before adding an effect on to darken the outside. The cat is actually three layers. One for the black outline, one for the shades of colour (it looks more natural than piling it onto one layer) and one for the shadow beneath the cat. Just a burned grey. The colour of the cat was made by two shades, which were then dodged and burnt in areas to give the effect of light.
Most of the time, I like to recreate storm scenes, or nebulas (I did a long blog post on how to do it
here) I love space and storms (tornadoes and super cells) like in America, but we don't get any good weather like that over here. Depressing really.