Well, my first commissioned piece is complete and here it is. Inkscape is currently chugging away on the 600 dpi rendering.

Click image for larger version. 

Name:	assassin.png 
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This was pretty much all Inkscape and the source for everything is a big vector image, including the textures and symbols.

The setting is for the client's fantasy stories about a group of assassins: http://www.assassins.org.au/

The target print size is A3.