hey, i just scraped agaisnt my freaking garage door like an idiot so now i have this huge gash along my front bumper and it scratched all the way to the black plastic . Can somebody tell me what I need? I know i need the paint, like 2000 grit sand paper, soapy water, clear coat, rubber compound...if theres anything else, please tell me. Also, i've never done a touch-up and i want it to look nice...got any tips? or some sorta tutorial? Thanks.