I found this fun and unique way of using sticky back canvas on a video from Lawn Fawn click here and watch this technique for yourself: http://lawnfawn.blogspot.com/2012/03/lawn-clippings -video-31312.html
This is the sticky back canvas I used. It is 31/2" x 21/2". I used Modge Podge instead of the multi medium just because that is what I had on hand and I wanted to try the technique right then. The Modge Podge worked great.
The first step is to remove the protective covering from the sticky side of the canvas then apply your pattern paper right side down to the adhesive. Mist the paper with water and allow to soak in. With thicker paper you will have to mist it a few more times. Start rubbing the paper with your fingers and it will start to come off leaving behind the pattern on the canvas as shown in the photo below.
Let the canvas dry then apply your multi medium or Modge Podge and let it dry. Here is what the finished canvas looks like. Here is a tip: be careful not to rub too much or you will rub the adhesive off and lose the pattern.
I used the sparkle Modge Podge on this piece.
Here is the card I made with my second canvas. It looks like a mini piece of art when when you frame it.
If you have used this technique I would love to see your projects.