I just finished a top that simply HAD to have mitered borders.
Here's the thread with info about the quilt.
http://www.quiltingboard.com/picture...w-t226587.html
I've tried to do these before, but always chickened out. The biggest problem is the how-to videos use teeny-tiny examples to show how to do this, but this time I just plunged in and did it. They are right when they say it's just not as hard as it would seem.
My biggest piece of advice is on the larger quilts you really don't have to fold the entire quilt on the diagonal to get the miter right. If your border pieces are lined up and the corner you are dealing with is at a good folded point then you are good to go.
I looked at every video I could find, but this was the one I looked at just before trying to do it.
http://www.bing.com/videos/search?q=...a+quilt+border
My pictures have been coming out fuzzy and upside down - wish me luck!
The blue/yellow one was my practice quilt. Of the 8 corners I have now mitered I had to rip one to line it up better. The blue/yellow one had a scrappy border and even though the miter is fine it looks funny in places when the corner ended up having a little bit of one fabric instead of having just one - or two - fabrics in the corner. The last pic shows what I mean. So .. you really CAN do this!