The 3D software I used was Modo, but really, any 3D software will do.
Also, my modelling is terrible, since I haven't touched it for nearly a decade, but for this kind of photobashing purposes, I guess it's good enough.
When rendering, you can also render the alpha, the illumination and the surface id, which is a big help in selecting areas when painting later on.
If I had a little foresight, I would have set the green secondary light source in 3D. But I didn't, so I had to paint it in.
Also, if I knew how, I'd have changed the FOV, but I didn't. XD So the comp looks rather boring.
Hope it helps!