12″ Finished Block: Blocky Butterfly

From the 2026 Sew Flake Mystery Quilt Challenge

June Block Two: Blocky Butterfly

Instructions by Julie. Posted by Tia. (See PDF copy)

You will need 3 Fabrics: Use the Coloring Diagram as needed.

1 – Cut:

Background Fabric:
- Cut (2) 4 7/8” squares then Sub Cut on one diagonal
- Cut (1) 2 1/2” x 21” strip then Sub Cut (8) 2 1/2” squares
- Cut (1) 4 1/2” x 11” strip then Sub Cut (4) 2 1/2” x 4 1/2” rectangles
Light Fabric:
- Cut (1) 4 1/2” x 11” strip then Sub Cut (4) 2 1/2” x 4 1/2” rectangles
Dark Fabric (or Medium):
- Cut (2) 2 7/8” squares then Sub Cut on one diagonal
- Cut (2) 2 1/2” squares
- Cut (1) 4 7/8″ square then Sub Cut on one diagonal

2 – Make Center Four-Square: Sew (2) 2 1/2” Background Fabric squares and (2) 2 1/2” Dark Fabric squares together to make a four-square block. See diagram.

3 – Sew Body Corner Blocks: Sew (1) 4 7/8″ Background Fabric triangle and (1) 4 7/8” Dark Fabric triangle of together to make one Body Corner Block. Make two Body Corner Blocks. See diagram.

4 – Sew Wing Corner Blocks: Sew (1) 2 1/2” Background Fabric square, (2) 2 7/8” Dark Fabric triangles, and (1) 4 7/8” Background Fabric square together to make a Wing Corner Block. Make two Wing Corner Blocks. See diagram.

5 – Mark: Mark (4) 2 1/2” Background Fabric squares with a diagonal across the wrong side. This should be done with a light pencil or a removable fabric type of marker. Frixion pens work well.

Note: Draw Iine corner to corner on wrong side of the 2 1/2” square.

6 – Sew Wing Tip Rectangles: Lay the Background Fabric square, right sides together on one end of the (4) 2 1/2” x 4 1/2” Dark Fabric rectangle as shown in the diagram.

*Two sets will be facing one way, and two sets will be facing the other way. See diagram.

Sew along the marked line. You will be sewing only one side of the 4 1/2” rectangle. The chain method works well on this step.

When you have completed sewing the square on all 4 units, trim the seam down to 1/4”. Set your seam and press to the side.

7 – Sew Wing Blocks: Sew (1) 2 1/2” x 4 1/2” Background Fabric rectangle and (1) 2 1/2” x 4 1/2” Wing Tip rectangle together. Make (4) Wing Blocks. See diagram.

8 – Arrange: Arrange (1) Center Four-Square Block, (4) Wing Blocks, (2) Corner Body Blocks, and (2) Corner Wing Blocks as shown in the diagram. Sew together in order shown in the diagram.