I found some Cars curtain fabric at Spotlight which I thought would be a nice sturdy fabric to use.
I folded over the fabric to make a rectangle about 40cm x 35cm.
Then cut a flat - doubled over, same width as bag with slightly curved corners.
Turn it wrong sides together and bind the whole flap. Here's a good tutorial on binding.
I wanted to add a wee pocket for his library card. Cut a piece of plastic (like what duvets come in) approx 4"x3". I started to bind this but it was way too hard/fiddly so cheated. I sewed across the top first and inserted the plastic into one folded edge. I did a large zig zag stitch.
The other three sides need to be sewn onto the bag. I turned over the edge of the binding, inserted the plastic into a fold and sewed down one side. Cut, then repeated the process for the other two sides.
Next fold down and sew the two top edges where it opens (seperately)
Next I bound the two long and bottom edge sides.
Pin your flap where you want it to go (remember to pin to the back piece)
And sew
Attach a snap (or velcro) and you are down
Until next time, Melissa