Years ago I made a quilt for our king size waterbed. Now we have a regular mattress and I found this old quilt and I'd like to use this quilt again. The problem is that the waterbed quilt is about 20 inches too short lengthwise and widthwise because it only had to be tucked in to fit. Can anyone give me sugestions on how to add additional borders to an existing quilt? Any help would really be appreciated. You are all so smart! Thanks.