Once the block becomes an hour glass, the fun part begins!  From the middle of the block, measure a 21/8" portion and cut.  Keep turning the block and cut all four sides..  like so....

After sewing all the sides, cut diagonally.  Iron the fabric towards the dark print.  Then sew all the squares together.  Lastly, before the final cut sew them into hour glass.

The first step is to cut out 10" X 10 " square blocks.  30 squares of the red, purple and black fabric and 30 squares of  plain white fabric.

The second step is to put both the plain and coloured squares...right sides together...then sew all the four sides together.