With the bag in pieces, the first step is to join it back together again. I employed a great tool here that I highly suggest everyone make use of (if you have access to it) – your mother. My mum is much handier with a sewing machine than I, and we just happened to be visiting 🙂
Here is the bag mostly stitched back together, with an iPhone for size comparison. My iPad turns up tomorrow, so I better get a move-on!  Shown with a beautiful piece of Andrew Muirhead Scottish leather found on TradeMe.  Just the flaps left to finish by hand before attaching leather and straps.