I think that your quilt is really beutiful i think the trouble you are having with the boarder is that you have to make sure the quilt is square. measure with tape measure across starting in the middle and then the ends. even if it off and inch you are going to have to trim with a rotory cutter. then you should do the lengh measure the border the exact lengh of the top and bottom fold in half and start pinnig in the middle of the end of the quilt. then pin it on trying not to stretch it. then do the lengh. when you sandwich it together, again, making sure it is kept square, it should be wavey free. I personly like to use basting in a can you just spray it on. but if pinning you need pin alot and use the cruved ones it help the fingers and use a spoon to close. happy Quilting Donna