All my blocks are done and squared and I am trying to sew them now...and I am really struggling to put them together.

I tried using my handy new book and well, I just can't figure it out!! ugh! Are there any tips or tricks to doing this!? I thought I would first hang them on the design wall which I did. I have 9 rows, 40 blocks alternating rows of 4 and 5 blocks.

I can't for the life of me figure out how to sew it! As I have 40 I've decided to use the side set triangle colour as a center block?? But I can't seem to figure out how to incorporate the triangles! I am starting to think I may not be smart enough to do this!! Help??