Hilary is still having a few problems getting onto this site, so I am posting this for her.
In explanation of her delightful quilt, she says:
On this blog the members of Sky-is-the-Limit group show the results of the challenge quilts they make. We started with each quarter a new theme, but have changed this to a monthly theme. Knowing that life can interfere with good intentions it is not compulsary to make a quilt each month, but at least 4 quilts per year should be doable. Every quilt measures 12"x12".