I accidentally found a couple of shortcuts that might be useful for those who edit the 2D bitmap.

Keyboard arrows rotate the 3D model, letters a, s, d and w move the model and on my Spanish keyboard the keys to the left of the backspace key ' and ¡ (this is an inverted exclamation mark) zoom in and out.

I know nothing about skinning but I wolud have never thought that the lettering in Qirex's "High speed revolution" would need that kind of deformation to look good in 3D