This contest looks like fun (and good practice) so after much dilly-dallying, I have decided to submit my (late!) entry:
A witch offering a poisoned apple to a small child (you, the viewer). One little irony - the apple still has the “organic fruit” label on it. Cropped in close so that you just have the witch’s smiling face with the apple and her gnarled hand in the foreground. This will keep it simple in keeping with my relative lack of experience and rather antiquated computer.
Since I’m on ZB2 (so can’t do re-topology) and have to keep my poly counts low, I’ll probably do base meshes in Silo, but the rest will be in ZBrush apart from tweaking in Photoshop.
Here’s an initial sketch done in ZBrush (I still need to put the hand).
Good luck to everyone,