I’ve been having fun with lots of basic shapes lately, and this week’s sketch is no exception. It’s another one featuring half-circles, quarter-circles and half-square triangles.

This design feels a bit celestial to me… those inner stars combined with circles that look like they’re straight out of a moon phase calendar.

There are so many minor variations possible with this design – for example, by alternating the colours of the inner stars or the half-moons.

I also like to treat some blocks differently from others. In the next version, I’ve filled in the outer half-moons for the outside blocks. This means the half-moons are only created when two octagons come into contact with one another.

And I can fill in all the internal shapes so that only the squares created from the 4 corners of adjacent blocks are white.

Or add more whitespace – this time filling in both sides of the half-moons so they become circles, and then colouring some of the stars white too. This changes the design quite a bit.

I also used that dark blue as a background for one of the earlier designs, but didn’t change the colour of the dark blocks. Now it looks like there are blocks floating in space, connected only by stars.

This Sunday sketch would be relatively easy to make into a quilt; you’d just need quarter-circles (drunkard’s path units), half-circles (if you want to save yourself making double the number of quarter-circles) and half-square triangles. And some versions don’t even use the half-square triangles.