Cut out your stolen image and using the glue stick (or spray adhesive if you're better prepared than me) attach it to the card stock.
Cut out all the negative space of the image using your scissors and craft knife, for the finer details. Flip the pieces over, so only the card stock is showing. If you used a glue stick, you can probably peel the original printed image off. But it really isn't necessary.
sorry the image is sideways. I'm too lazy to fix it.
Arrange the pieces of your image back in order on the card stock, gluing in place. Set aside.
Cut out a piece of foam core board to the size of your pattern paper. I did 12 *12 and was able to get 3 squares per board. You could probably sand the edges or something to get them smoother. I did not, but wish I had. Spray adhesive the pattern paper with image glued to that onto the foam core.
Spray paint the edges of the mounted paper and foam core. Afterwards, I kind of wished I'd spray painted prior to putting the image on, but whatever. I still like the end result.
Mount on wall with something like these