Originally Posted by
quiltedsunshine
If you need to, you can add a "coping border" that's the same color as the border. Then square-up after the border is sewn on.
I also like to wash a panel to get it to relax after it's been wound onto the bolt crooked.
Good Luck!
And fwiw whoever quilts your quilt will be grateful if you put on the borders such that they do not ruffle. I made tops for years putting my borders on wrong, now I use the method detailed in the video below and it has made ALL the difference!
https://www.youtube.com/watch?v=paIq..._lggw&index=17