In one sentence, describe what the following article is about:

Blank vinyl pieces can be bought at a craft store. Use a pencil to outline your design on the non-adhesive side. Some vinyl has an adhesive backing. Non-adhesive stencils can also be used but must be taped with an adhesive. Your design can be anything you want, such as a bird, a tree, or letters, but remember that what you draw will be cut out and this shape will be what's etched on the glass. Patterned stencils may also be available, ordered online, or designed and printed. For letters, instead of using a stencil, you can etch around tape letters. This is only necessary if your stencil cannot adhere directly to the glass. Get a piece of vinyl larger than your stencil. Set the stencil in front of it, then secure the stencil to it by applying tape over the stencil's edges. Using an X-acto knife or other sharp knife, cut out your design along the outlines you made. Hold the blade upwards so only the tip touches the stencil. Remove the parts you want to be etched into the glass, taking care not to tear the surrounding space.

Summary:
Draw the design you want to etch. Place your stencil over vinyl shelf liner. Cut the stencil with a knife.