I did look for moss online and I am a little worried from online shopping. So many people get their identity stolen so I stay away as much as possible. I appreciate the suggestion though.
The only reason I wanted to do the milkshake is because I wanted the spores to take nicely on a large surface (17 inches high; 35 inches long). If I applied it the way it was than I wouldnt have much of the background to cover. plus I wanted to see if it would actually work so that I can start on some "green graffiti" on my backyard fence