I used a basic three point lighting set up: a mental ray area as a key with an orange tonality, but intensifying the power in the face with an omni light, then an omni light as a fill and a blue mental ray area as a back light. All the lights had mental ray shadow on (Fig.09).
Rendering and Composition
I rendered the final image, saving an alpha and an ambient occlusion to compose it in Photoshop. Then I made the background after searching for astronomy photos like nebulas as a base and then making some colour variations and tonalities to match it with the rendered light (Fig.10).
And that's the work process. I hope that you enjoy it and that this Making Of was helpful for someone. Thank you!