“Men have called me mad; but the question is not yet settled,
whether madness is or is not the loftiest intelligence.”
– Edgar Allan Poe
Here is a summary of the compositing process, starting with a plain background and the diffuse pass. The shadow and AO passes are set to “multiply” and the bounce, rim and fill light to “screen” mode. The rest is playing with opacities, textures and colour corrections.
A Quick Guide
One thing that I did differently for this illustration was the Hair. I put together a super quick and simple guide on how to stylized the hair using fibremesh – This quick guide is a bit old but you might find it useful.