I'm guessing you're asking about doing the binding on those staggered edges?
Here's a how-to on doing inside corner miters (with great pictures):
http://thriftyquilter.blogspot.com/2...-tutorial.html That's a really fun quilt (although I think it need a ton more quilting).
As noted, if you haven't yet cut your binding, I'd also suggest using bias binding. The one time I did it, it made life a lot easier just having that extra bit of give.
This method doesn't require it (but I'd do it anyway):
http://www.quiltville.com/binding.shtml
Go all the way down, almost to the bottom of the page, to Irregular Bindings.
Just go slowly, and check each corner before doing the next (just like you would on normal binding...you go another few inches, and then fold the miter to just to make sure it's correct).
Good luck!
GORGEOUS quilt top!