Here are some pictures of a project I did for a friend. She brought me some glasses from her mother's wedding and wanted her daughter's wedding and her mother's dates etched on the bottom. I was really nervous and even had nightmares about these 60 year old glasses being broken :) But they turned out soooo awesome!
Used the negative of the vinyl for a stencil
Applied Armor Etch (can easily find this at Walmart or Micheal's in the craft area)