Supplies:
An old CD or cassette case with very few scratches.
Adhesive Velcro. I got this at a local hardware store.
Razor.
Fine sandpaper.
I started by placing the CD case on top of my camera and traced the shape of the LCD screen with a little extra space on both the left and right sides.
I than scored these lines all the way to the edges of the CD case with a razor blade. Once scored the lines can be cracked by gently bending the plastic.
To finish the plastic I beveled the edges with fine sandpaper.
Next i cut two thin strips of adhesive velcro the height of the LCD screen. I afixed the soft sides of the velcro to the camera and the course side to the plastic.
In case you are not as cheap as I am: