Make sure handmade paper is flat. If necessary, weigh down over night to remove waves and bumps.
Use lines on paper cutter to make straight, even edges on all sides, removing the natural edges.
A typical business card is 3 1/2" by 2". Use a ruler and light pencil marks to determine the number of cards that can be cut from your paper.
Line your paper up and cut it into even 2" high strips.
Now cut vertically to make each card 3 1/2" in length. The goal is to have as little excess paper as possible.