I used the stuff (from Halfrauds !) that you use soapy water to lubricate it with............I was in a hurry, it does the job, but it looks a complete pile of cack
As has been said above, ideally take the glass out, clean it good and proper, and lay the glass on a soft surface. With the stuff I used, you spray a soapy solution over the glass, take the backing paper off the tint, and apply it working from one corner diagonally across the glass - two pairs of hands helps here. Then use a small, blunt straight edge (credit card sized piece of flexible plastic) and smooth your way from the middle of the glass to the outside edges - the soapy water solution will get squeezed out as you go. Then leave it all to dry................it takes a while apparently !. Then use a sharp blade to trim the excess - then refit the glazing rubber, and then refit the glass.
