Ok, here it is; the long awaited bag tutorial. I changed up the straps just a bit but I think from the instructions you can see how it would be easy to do 2 straps instead of one and where to place them. I love this bag, it's ending up going where I go just because it can hold so much stuff.
Once again if you can't read the directions ON the pictures, click on one of them to go to my web album and it'll be much much bigger. :)