One of the tricky parts of many projects is labeling the controls or buttons on your front panel. A new way I've been trying out is using rub-on dry transfer letters. Basically you get a transparent sheet of paper with letters and numbers on it and you transfer them to your panel (can be pretty much any material, including painted surfaces) by rubbing them. You can get tons of different fonts and font sizes, and even symbols. I got a few sheets of it off ebay for about $10. Here is a picture of it and the bamboo skewer I use to rub them on. They recommend using a pencil, but the skewer seems to work well.
Here is the panel with the enamel and the switches installed:
Here is another example I made for my air compressor. Some of the longer words can be tricky, you can see I didn't quite line up the letters in "overheat".