the large lonestar pattern makes a 54" star---which looks quite nice in the center of a bed...then bordered- with a plain-star-plain border to get it up to the size of the bed would be the way i would go about it.
there are some absolutely beautiful lonestar quilts out there===start...browsing---you will get so inspired!!!
i usually start with graph paper with a frame of the size i want the finished quilt---had to learn to do this so i quit making 14 foot long quilts---i had a problem stopping for awhile---had to learn how to make them stop growing :)