Blocking out the pose (Using a flattened Cube to show my reference image)

Sculpting and quick texturing using UV Perspective. Also uses "Mask by Curvature" and "Mask -> Colour" to shade the corners and edges of the model a bit brighter.
Lighting and effects all completed inside Curvy. The energy effect uses the "Glow" and "Fog" Object Properties to allow the light effect to be painted on 3D surfaces in the scene.
The final render.