Lay your device on the leather. We're going to trace around it to find the dimensions we need.
You'll trace a piece for the top and bottom. When you trace, add an extra inch around the perimeter and add an extra curved flap at the top of one of the pieces.
The two pieces will look like this when they're cut out.
Line up wrong sides togehter and using your bright thread and needle, make large stitches along the border.
Slip your device in, fold and tuck in the flap, and throw it in your purse! You're all set to go