These are SO cute and really easy to make.
Gather your materials.
Pull out the little plug in the back of the pen. This is the hardest part. You can use pliers to squish it out.
Now put the cap back on as sort of a template for where you should cut. About two centimeters back from the pen cap, cut the pen. Sorry the picture is blurry!
Now put the "plug" back in the pen.