Working out a new skill

Hello, everyone. As y'all might remember,  DH was really interested in a modern art painting at the Museo Thyssen-Bournemisza (spelling guessed from memory here) that was essentially a "color play" painted and modified version of a log cabin style quilt block. I think it was by Mondrian, and the general effect was a square spiral in a collection of similar-mood colors. He asked me to make a quilt like that.

the first try at getting the idea together.

There are about 22 squares that have the accent strip going diagonally down the middle, with each half a different color.

Today the trial divided square: 

and the size, without trimming

Pretty much right on!

Whoopee!