Thanks all.  
 I have an old dental tool that I sharpened up.
I have an old dental tool that I sharpened up.  I've used a compass point before though.  Works pretty much the same way, but the
dental tool is easier to hold.  I have a set of scribing tools as well, but the dental tool has a little hook at the end and I feel more
comfortable using it than any other tools.
Still moving around the dome. . . to the cat scratch!  I really like this feature.  It has a really distinctive look and there's some great
detail to paint in this area.  Here are a couple of shots.
The light catches the silver at different angles.
I'll work on the area around the turn signals next.