Teri here today, and I've got a quick cardmaking tutorial for you!
These three dies were created with cardmakers in mind. With them, you can take a card and quickly cut a border out the side of it.
Here's how they work.
Start by cutting an 8 1/2" x 5 1/2" piece of cardstock. Fold it in half. This will serve as your card.
Open the card up and set a border die cutting side down along the side. Use removable sticky tape (or Washi tape) to hold the die in place.
Run the card through your manual die-cutting machine. You'll end up with something like this. (By the way, if you have a hard time getting the pieces to punch through your card, consider using a metal shim with it.)
Use your border card like it is or doctor it up!