Binding inside corners....HELP!
 

I am in process of making a handbag that is basically a flat piece with flaps that fold in from each side, and one flap folds down from the top. The resulting flat piece I am ready to bind has outside corners (not a problem) and two inside corners. I am totally clueless as to how to get them bound. Does anyone out there know of a tutorial showing how to bind inside corners?

I just Googled "binding inside corners" and got lots of hits. Here is one video
http://m.youtube.com/watch?v=Be9dzI_X41w

i also like this quilters site http://www.fromthebluechair.com/2010...-tutorial.html

Thanks so much....didn't think about youtube!....tutorial looks pretty simple.