I made my blocks, one in my tester colors, pink and brown, and the other from my layer cake squares, both 8" finished in size; there's no little bitty blocks this time. I'm pretty sure it would involve templates so I didn't work on that. Here are the cut pieces for the Next Door Neighbor block:
I like to lay all the pieces out before I start to sew:
Do you see the blue pinwheel in the block? I like the way it stands out using the blue fabric in that spot but you could try other placement of your fabrics since all three fabrics are cut the same.
Once you are happy with your layout, did you find out you were short 2 pieces? Cut one more 2 7/8" square (cut in half on the diagonal) for the one you decided should be the pinwheel. Those two pieces will fill in the remaining two corners.
When sewing the side triangles on to the brown/blue triangle units align the straight edges. See the tips sticking out? They should stick out 1/4". The center row units should all be the same size.
Sew the rows together.
Add the blue corner triangles. Again, the points should stick out. Trim them off after giving the block a good press. I hope you enjoy putting this block together!