White scars symbols and markings

[Rune Priest Ridcully]

I was thinking of including either a unit of white scars in my heresy era Salamanders or doing a unit of traitor scar bikers in my Thousand sons, any advice on markings and symbols used by the white scars and maybe conversions to convert the bikers to look more scarlike, especially the chaos ones.

[RolandTHTG]

The 40k wikia actuall has a lot of the good pictures.
http://warhammer40k.wikia.com/wiki/White_Scars
The white scars are already trophy takers (including head takers) and wear a number of pelts and other animal trophies. Many space wolf bits that don't have specific wolf markings are good. Add a bunch of lightning symbols and jagged emblems and you should be good. If you think you can paint it, the helmet tribal markings can be very distinctive.