Your quilt fits your bed beautifully. I think you are asking if adding a footboard and to having to tuck the end of your quilt between the mattress and the footboard would be damaging? Shouldn't be, if you don't tug on it. However, I'd just leave the bed as it is. The quilt shows better without the footboard. (If you made a little bench and put a cushion on it matching your quilt, you could put the footboard behind it, as a backrest.)