Make 4 patches of HSTs
Try to make sure that the center is neat and that the points align, this will matter later
Make the 4 patch Units Shown with plain blocks for clarity
(1)
Lay out the HSTs needed for your Unit block
Take the top 2 blocks and put them right sides together.
Sew them together
(2)
Repeat with the second pair
Press the seams in opposite directions.
Place the pairs with right sides together and “nest” the seams (1)
(3)
Sew the two pairs together along the long side of the pairs (2)
“Spin” the center where the seams meet to have the set lay flat (3)
(4)
Press the direction the spin indicates. All the seams will face the same direction as you rotate the block (4)