The Prairie Queen Quilt Block

The Prairie Queen Quilt block is a 9-patch block, as
you can see from the grids on the block at the left. Four of the grids has been
further divided by 4-patches, so you can also say this is a 9-patch block that
has been further divided into 36 grids.
The Prairie Queen quilting block is not hard to make. There is a plain
square in the center of this block,
half square triangles
in the corners, and 4-patches
on the sides. These are all beginning quilt blocks.
Decide on the side of your patches, and make the units. Sew them
together using good piecing and pressing techniques, and you are done.
Here are a few design options:
