Sketch 2 opposite diagonal lines on the white square making an X.
Then make a cross in the middle.
Secure with pins then make another one using the 2 remaining squares.

Image by: Shveyniy ugolok s Ludmiloy Zardinovoy
Step 3:
Cut each of the triangles on the squares.
Open each triangle to make a square and flatten using an iron.
Trim off the excess for each square.

Step 4:
Assemble all the squares into this pattern.
Then stack each column.
Step 5:
Sew the squares for each column first with a 1/4 inch allowance.

Once done with the columns, sew them together.
Press them using an iron.
Step 6:
Sew the border into the patchwork and cut off the excess.
Finger press the border.
Step 7:
Make 2 folds on one of the 19.7-inch sides of both back fabrics.
Sew the edges by making two folds.
Once done, pull the right side out.