I've been asked how I created the circular edge on this card. So here's the tutorial:

Circular Edge

1. Start by cutting your card base. I cut a 4" x 8" base (folded 4" x 4"). Measure in about 1.5" and draw a vertical line (usually I would draw this in pencil so it could be erased later, but I drew it in pen here so it would show up in the picture).

2. Line up Coluzzle template so that the outer circle intersects at the points where the vertical line meets the top and bottom of the card front. Cut.

3. You should end up with something like this:

If you don't have a Coluzzle, you could use a dinner plate or bowl and trace the edge and then cut it out. I used both before I bought a Coluzzle. :)