basstard says:
Does it need to be a painting/ drawing or have you considered photography?
If you know someone with a decent camera it's a good time of year for interesting shots of nature, weird skies, rainbows (Dio lives!). Even fairly mundane evryday scenes can be filtered and tweaked into something rather groovy.
Definitely cheaper and quicker than commissioning an artist.
It could be anything to be honest. I have a guy to do the graphics but he's not an artist. I've just sent him a bunch of photos to see if he can fuck about with them and come up with anything.