'Using a photo of the original Duck
to replicate each and every scratch'
lol, if you look at your guitar an then the orignal the main wear on the front of it is a good 1 and a half inches lower on yours than on the original
as for tips check out all the tutorials on www.projectguitar.com and once youve read them do a search on the forum on anything you need more help on, and if you cant find anything then ask the members, in that order, lol, youll get a better reception of the members that way, thats what i do as im still a newbie guitar builder myself