seen it wow..too much work for me..plus one little slip up u could damage ur headlight...two if u do finish it u double look inside theres pieces of glue inside..i say just leave it or get the smoked headlight covers from americanmuscle.comif you still want to do it without buying it here is a nice write up
How to make clear corner headlights for your Mustang GT, V6, Mach 1, or Cobra- MikeFordMustang.com