Actually I had issues with the etching cream so I cheated... at AC Moore I found a spray can of 'frost'. It's used to either decorate your windows for the holidays or create privacy on your windows. It's VERY durable and looks just like etching frost!!! I found it in the glass section as they had all kinds of samples of them having sprayed designs on glass vases, jars, etc.
Just spray it on, let dry a minute and stamp away!! Now I spray everything for a frosted look!!! hee hee!!