One of my friends requested a very imaginative painting...
He wanted Iron Maiden's mascot Eddie

Playing a Jackson Warrior guitar

In flames...

With nuke clouds in the background

This was the end result:
It took a looong time to make...
I even made a time-lapse video of it.
The quality of the video isn't the best, but it explains the concept with a little
blurb at the beginning, and it shows the process of painting it.