I have the book you reference. It has the Surf Song pattern but not one called Misty Morning, so can't address what any differences are. In the book, she gives directions for Surf Song in three sizes: 98" x 96 1/2", 108" x 110" by adding a border and the third is a smaller wall hanging 46 1/2" x 48 1/2". I have not made a Bargello yet so I don't know how to reduce the fabric requirements to lap size. The fabric requirements for the 98" x 96" sixe are 5/8 yard of 24 different fabrics not counting binding and backing. The smaller wall hanging size calls for 1/4 yard of 20 different fabrics. Maybe you can extrapolate between the two.