I made some panels like this this summer, to block the sun coming into our apartment, without blocking the light completely.

The canvas was more expensive than the wood, I must say. I just made squares, not divided panels, because I wasn't sure how we would arrange them. I used lap joints for the corners and I just wrapped the canvas over the frame and stapled it at the back. I put a couple of feet on each one so that the canvas wouldn't be touching the ground and get dirty.

So, nothing fancy at all, but they're actually very pleasing to look at - the sunlight coming through them, especially. I can really recommend this as a project!