you are close.....
You COULD just use the PVC printer to print the sig-strip sing NORMAL PVC INK, then sign it wilth a sharpie...but then it wont have that raised feel.
You COULD buy BLANK CARD STOCK, WITH PLAIN WHITE STICKER as Signature Panel, then print front+back, and EITHER leave sig-panel part BLANK, or print design over it to mkae it more realistic.
OR THE BEST IDEA, IS TO BUY HEAT-STAMPED SIGNATURE PANELS. OR BETTER YET, MAKE THEM. NOT TELLING YOU WHAT MEDIUM, OR WHAT INK, OR WHAT SIZE, BUT THE UNTIMATE FID GUIDE has EVERYTHING YOU NEED BUDDY BOY.
cheers to an instore VIRGIN moving to 3rd BASE>...
It may be scary at first, but u will learn to love it.