The Maynard Plaza quilt is 52x70. The top of a king mattress is 78x80; a California king is 72x84. A kingsize quilt could range from 104x93 to 120x112, depending on the drop you need, whether you want a pillow tuck, whether you have a footboard, etc. Let's say you want the smaller quilt, 104x93 (13" drop, and no pillow tuck). The Maynard Plaza quilt measures 3640 square inches; the 104x93 quilt measures 9672 square inches. That means the smaller king quilt is 2.65 times as big as the Maynard Plaza quilt in area. So even if it were as simple as doubling everything, you would still not have a big enough quilt for a king. Also you might find that the proportions of the design need to change for a quilt that's so much wider, and longer. That's not to say it would be difficult to figure out the dimensions for a design similar to the one you like, only that it does require some work.