If it is not big enough but needs to be displayed or used because your mum made it, I suggest to get a coordinating cover that will fit your bed and then, when the bed is made up, place your mum's quilt over the bed so that it sits like a diamond in the middle. It will look OK if the underneath one either matches or contrasts nicely. Other than that, get a Hanger and hang it on your wall at the head of your bed.