The video is almost 20 minutes, but the actual work was around 45 minutes.
I use hotkeys for scaling, moving and rotating UV meshes.
I'm uploading it mainly to show how easy it is to work withe any model and an existing texture, and to show that anyone can easily achieve great results with an atlas and a little creativity.
The video:
http://www.youtube.com/watch?v=FQ2_-AYeXuI
The finished model ingame:
