I don't do custom graphics, and I've moved away from guitars with pickguards, although I've still got two.
Here is my Cort G-VT with a pearloid plate I made:
Bigger pic here
I originally made the pickguard as I needed one that had three single-coils, instead of the original HSS. I've also done a matching trem and jack cavity cover too. The pickguard was made for a different bridge and with a mini-toggle between the two volumes, so I'll have to make a new one sometime when I get a chance - probably from wood.
It's a pretty straightforward job as long as you pay attention to detail and is a days work done properly. I used to cut out the rough shape with a jig saw, drill holes for screws and the pickups and do the rest with a few files and a blade to scrape the bevel smooth. These days I use a Dremel with a small router bit to do both the outline and the pickup holes. I countersink all the screw holes (including switch and pickup holes) with a drill press and use the smaller Gibson size screws for the guard, so I can get them flush with the surface.
It's a solid days work, so I only do it if I have to.