Draw it all out on graph paper to get the block measurements right. Once you have the measurements of the sewn together block, you can cut appart the pieces and add seam allowances to get the fabric cutting sizes. I would start by piecing the center 9 patch. Then add the 2, 3 bar sections to the 9 patch. Then I would piece the next 2 rows of the bar sections and the trangle/squares and sew them into rows. I would then attach the 2 rows to the center row. You will now have the center section done. I would then piece and add the pieced triangle sections to form the block.