Here's some fun lighting exercises I've done using a character I downloaded from Gumroad.
In addition to the lighting, I redid the shading to make the diffuse as procedural as possible and made bump maps from the original textures. I also made a few small modeling tweaks to the eyes.
Model by Dan Eder. Rigged by Truong. Posed by Ton Tuan Bao Long.
https://gumroad.com/l/psylocke