What you will need:
Print 1 (mine is fleur de lis):
Print 2 (mine is the dark color):
You're going to start by sewing your triangles from the 2nd print to your solid triangles. Make 4 of these. Press your seams toward the darker side or open if you prefer.
Next, you're going to add the pieces from the above step to the triangles from your first print. Make 4 of these. Press seam toward the print you just added or open.
Now arrange your block like so:
Stitch your rows up and press your seams toward the solid square on each row, this will make them nest nicely when you sew them. You can also press them open if you prefer. Your finished block will look like this:
Since all 16 blocks are going to be different you only need to make one! Block 2 will need a duplicate print, just so you're aware. I would save your favorite prints for block #3, it's pure awesome and would look awesome with all prints, you will need 2 duplicate squares for this block if you choose to do all prints, if not, just one duplicate will be needed!