http://www.coolminiornot.com/article/aid/288/page/3
Provoke
This covers the scratches and dings to a tee and it is on what you are doing I think.
I used it for the stress lines in the leather as well
EDIT
Tim I updated you WIP cause this one is just too good to waste ...( if you upload single pictures here not spliced I can pull your work from with out distortions) BTW peeps one of Tidico\'s gallery lives
Here
his work is the bomb and we are proud to have him there
Klute I got the power.....DaVinci Brush arrived today thank you I can not believe the quality and the size of this brush... as you can see I broke all of my sucked brushes to fit under the magnifying light. I posted pictures of most of my wip also but the shark project I can not show :~(
Thank you Klute for sharing this ( Dick Blick Art Materials had the brush here in the states shipped 2 days). New sculpting set from gale force nine is great as well two sided tools more than I will know how to use really great quality highly recommend