I came across a wonderful tutorial on redbubble that I wanted to share.
Etched Glass Effect in Photoshop
Written by: Alison Johnston
"You can make this an etched glass effect, or, by inverting the filter, make it appear as though the shape/type/whatever is moulded in the glass. Because my glass is light, I will be using a black filled shape. If your bottle or glass is dark, the type/shape/whatever, would need to be white. So lets get straight on with it. You can click through on my glass image below to get the larger start image, or you can use one of your own. Just remember that any settings I use are relevant to this file 720 X 1000 @72dpi."
Here is the before photo:
And here is the after:
http://www.redbubble.com/people/alisonjohnston/journal/1580647-etched-glass-effect-in-photoshop
