Originally Posted by Dee Dee
2) Any advice?
Take a 10" square of scrap material and four 2" wide 16" long strips.
Watch the video.
Understand how much additional length you need to add to your border depending on the border width.
Now practice on the scrap material. Get used to where YOUR needle/foot is stopping relative to the end of the quilt top. What guides do you have to let you know you're 1/4" away from the edge? Familiarize yourself with them.
Now, there are many different methods for actually sewing the miter. Play around with the fabric to see which you feel most comfortable using. Can you get the miter to lay FLAT so it's a perfect 45 angle after sewing?
I NEVER trim the excess fabric until I'm sure of the above.
Then work on your quilt. Because, really, if you're unsure, playing around with a full/queen/whatever size quilt isn't fun. Plus it's so much more to rip out.
Once you can visualize the whole process, you'll see how easy it all is. You won't hesitate to do them in the future. And y-seams will be a breeze.
;-)