Do like Mike says above. You can use super glue or clear nail polish to seal the fiberglass. I prefer the nail polish, sometimes super glue will craze making white residue on you paint. Or you can just use touch-up paint. Use blue tape.
When I put emblems on, I trace them on a manila folder. Then I cut the trace out to line them up on the car. Lets you line the emblem up straight and the holes in the right place.