I decided on a butterfly, so I used my Cricut to cut a butterfly onto vinyl. This will be the template. Then the negative of the vinyl gets adhered to the glass.
You'll need Glass Etching Cream, found in the stained glass aisle at your hobby store. I was surprised at the price, $8.00 for this small bottle, but it doesn't take much to get the effect you want.
The directions say to paint it on thick and leave for five minutes. Then rinse with warm water.
So hard to get a photo without glare on glass, but this isn't too bad. The few round spots on the bottom right wing I think may have been from a few bubbles, so make sure you don't leave any of those. But all in all, it turned out pretty well. I think next time I may leave it on a little longer and see if the etching darkens.
Super easy. Give it a try! Remember you can always find super cheap glass items at your thrift stores or the dollar store!!