As far as tips for application...Use warm water and if you can avoid it, don't slide the decal from the paper with your fingers. To do it without using them, you can use one of those little white foam makeup applicator pads on a stick that your wife has somehwhere - use a new one though!

Wet it with the decal and press it down gently on the decal to hold the film with just enough pressure to anchor the end. Then pull the paper from under the film. Be careful not to stretch the decal or it will distort. The smaller Pat.Pend. decal can be moved around on a cushion of water until it's in the right place then mashed down to squash the water from underneath. But don't let my language fool you. These are delicate items and these motions and actions are small and precise. Do your work at eyeball level so you can see the tiny details of what the decal is doing - wrinkles, bubbles, or trash under the film can all ruin the application. When the decal is in place, press the water out from under it and let it dry in place before clear coating.