A single block looks like this:
Step 1: Cut 60 degree diamonds using the 60 degree mark on your Omnigrid Ruler (line it up on the edge of your strip of fabric) . The strip of fabric should be 4 1/2" wide - or whatever width you like. If you want a smaller centre, have at it!
Step 2: Using 2 1/2" strips, sew the strips in the order shown in the diagram below (see the numbers on the block below the strip). Trim off your strips even on the edge of 60 degree centre diamond and using your ruler, prior to adding another strip. Press in the same direction away from the diamond for all blocks.