Not much sense in having a cutting mat if you don't have an X-Acto knife!
I took a toothpick with a carved end and shaved a blade out of the piece above the first notched piece using my scalpel (could have used my X-Acto blade).
Then I painted the end of the toothpick silver. (I used Metallics by Billie nail polish from Dollarama but could/should have used my silver Pilot pen.) I didn't cut this to size until the nail polish had dried so I'd have a handle to hold while I painted it.
Once the nail polish had dried, I cut the 'knife' to size and painted the cut end.