I recently had the pleasure of illustrating this poster for the movie Amélie, produced in collaboration with UGC France, and approved by none other than Jean-Pierre Jeunet and Audrey Tautou. Here's a look at my process:
I generated a lot of idea thumbnails before finally settling on #4, here's a selection of my favourites.
An idea of my workflow, from thumbnail through to finished illustration.
Variant - this featured metallic ink on areas that were hit by moonlight.