This carpet is very large and I have never understood the logic of the pattern. One way to try to understand something better is to attempt to draw it. My drawing shows just a small fraction of the pattern. I began to put watercolor on it, then decided to photograph it in progress. I will photograph it a few times as I work, so will have a record of the changes, like a series of states of an engraving.
I don't think I am going to do any more on this.