I suggest practicing a little on something similiar (find a bare piece of metal, sand it down and then practice your stroke. It's all about the "stroke" and the amount of "pressure" you apply with the pen in your hand. If the tip of the pen starts drying out or appears to be going on uneven (ie: stripes), I switch to another pen and prop the other one up so that the ink moves back down to the tip. The secret is in the stroke/pressure applied and a bit of old fashioned patience. Oh, and multiple coats. You'll know it's right because it looks like it's been painted on when you are finished!

I sold about 300 of those exhaust system modifications (above) for jet-skiis over a 6 year period. I'm really good at it. And yes, if you think about it, that's 300 hours of practice!

Granted, if you get gasoline on your chain rings or crankarms, the finish will come right off. Just repeat the process again and it looks like a brand new part again. When I clean my rings and chain, I'll just wrap a micro-fiber towel around each crank arm just incase the citrus chain cleaner I use will remove it. Otherwise, it's ALOT tougher than you'd think...