Cutting has been done! I followed the instructions and used LOTS of pins. This is the complete opposite to my normal strategy but I figured Nicole knows a lot more about cutting than me :-)
Sadly, I have discovered that I own the crappiest sewing scissors in the universe - both pairs. Yes, I own two pairs, the crappiest and the second crappiest. I also discovered that I still can't cut in a straight line, even when I do use lots of pins. Or maybe it's the scissors? Surely I can blame my tools this time ;-)
Oh well, continuing on. All the interfacing has been stuck on, and I've sewed the velcro bit to the bag front. The velcro is another one of my modifications, so if my brain explodes it's because I'm trying to work out where to sew the other bit on the lining of the flap. Complicated!
This afternoon I attached the bag base, so now it's time for the straps. Again, this may involve an exploding brain...