A little bit of sewing later and, the underneath:
The top (both pieces of fabric from John Lewis fat quarters):
The camera inside. The blue fabric is from a t-shirt to give a big of extra protection, and also means a layer of fabric between the camera and the strap:
Camera safely tucked away and zipped up:
When I'm Japan (yay!!) I plan to fill the case with rice or pasta or something. I won't be putting the camera away anyway and a camera sized cushion will be perfect for getting steady shots (or more likely, cheesy self portraits).