I did this half-arsed attempt over the weekend for a fellow 5th Ranger.

The final product won't look like this, but pretty much the same idea.

Examples:
http://img234.imageshack.us/img234/299/example1aa2.jpg
http://img162.imageshack.us/img162/1884/example2lq4.jpg
http://img162.imageshack.us/img162/5916/example3ff2.jpg

The original helmet/face were done by Wile E Coyote with edits by Kieffer.