This 3D shamrock adornment is simple and fun. You can make it in a pinch - to avoid a pinch!
First, print out your shamrock template. You can do a quick google image search to locate one. Cut it out and pin it to your green felt.
Cut the shamrock shape out of your green felt.
Fold your shamrock in half and put a few (I used three) whip stitches on the back. Then fold it in half the other way, and add a few more stitches.
Then, use a few tacking stitches to attach your shamrock to your garment of choice!