This weekend I worked on unraveling the mysteries of "half motifs". That is, to take a motif, and make only a fraction of it. The smaller fraction pieces are then used to "fill-in" generally around the edges of a project. For example the irregular shape of a hexagon blanket can be 'squared off' by filling in the edge gaps with half motifs. Also, fraction motifs can be used in garments to help make a neckline into a "V-neck".
To clarify, this book doesn't teach half motifs (would you like to learn?) But I took full motifs from my book and played around with the halves.