Simply put....
Find a suitable surface, in this case I used the bottom of the display case for my big Porsche. Lightly sand for better paint adhesion.Scribe in seams and cracks. Spray on a coat of white or yellow wherever you want lines. Mask the line. Mix up a suitable color, I used a mix of flat white,flat black, with a little dark brown,and spray. Peel off your line mask. Now, drip thined down Tamiya smoke or thin flat black, (I prefer the smoke) all over to simulate oil stains.Lay a wash over the seams and cracks. With pastel chalks,add skid marks and streaks. Spray with dullcoat and VOILA!!!
