Here's what you will need:
-something to write/draw with (in this case chalk
-smallish needle (I used a size 10)
Draw your image on the back of your cardstock.
With your needle poke holes following the outline of the image. On a small design I space the holes about 1/8" apart. If the holes are too close the paper/cardstock will tear during stitching. If you decide the holes are too close once you are done simply use every-other hole.
It's important to use the large needle to make the holes and then the smaller needle to stitch, because you will be making the holes bigger with the needle and thread. I generally do a back stitch or straight stitch.