Cut your felt into circles that are one inch in diameter.
You do not have to measure; I just traced one of Hollyn's bottle lids to get the circular shape and was good to go.
You are then going to fold each circle in half...
...and then in half again. You'll then stitch just enough stitches at the point of the folded circle to make your circle hold a fortune cookie shape, so to speak. The stitches do NOT have to be pretty...no one will see them.
Once you have stitched all of your circles, sew the three orange circles down the center of the front of your shirt or onesie. Again I used black thread because you won't be able to see the stitches when you're done. I also made them overlap just a little.