Yes, I made one deeper and a little wider for my sister when she had my niece. I also added pockets on the outside that are exactly like the ones on the inside, changed the straps to a single long cross-body strap and added a magnetic closure.
For the pattern I believe I left the bottom section the same and just added inches (maybe four?) to the height of the top section. If I made it any wider I just added an inch or two to the width of both the top and bottom sections.
ETA: I thought I'd posted a pic here
http://www.quiltingboard.com/picture...ag-t85166.html