Start with the 6" wide pieces at the nape of your neck. Put one in and put a very thin section of your hair over the top and apply your second piece. Think of it like piggybacking them...you want to do this to build up some density in the ends of the hair. Then, put in your 7", pretty close to the two 6" tracks. Put your eight inch up towards your crown, sectioning from the top of one ear, to the top of the other. After your 8" piece is in, put one of your 1.5" pieces on either side (next to your face) to complete a full, half circle of hair. Section on either side, placing your last 1.5" pieces above the 1.5" and 8", kind of in the middle -- center it where the 1.5" meets the 8". Make sense...? This pattern seems to work the best for me. =) All you can do is play with them until you find a pattern you like. But, it's important to piggyback them at the nape so you get that fullness at the ends. =)

Hope that helps!