Making your own etched parts

There are 1000's of small detail parts available on the market today, but there are still situations when you may want to make your own. One way of doing so is by using the photo etching technique.
Rather than explaining that myself, here is a video that describes the process very simply and effectively.
One note, there are sprays available that you could spray onto any brass or other metal plate so you don't need to use a plate as shown in the video per-se.