I hope this helps!
Width on top is 11".
Bottom before curve is 12".
Handles is 2". Remember this is finished measurements. I'm horrible with copying a pattern. All I did was lay the leather bag on top of my fabric and went to cutting. Allowing 1/4 for seams. So it all works out for me. You'll find it is a very simple bag to make. And very cool shape. I love it.
If you need anything else let me know! GOOD LUCK!