How did I do?

Perhaps have the trees a little more of a "subject" rather than an incidental object that happens to be in your shot. Silouhettes of trees in the foreground tend to make pictures of the sky more interesting.

Also, houses and structures tend to take away from beautiful shots like this one. If possible, avoid structures.

Excellent sun rays... is that straight out of the camera, or was that accented in post production?

This is straight from the camera aside from a little crop from the top and export for web. I was actually surprised at how it looked on the screen when I took it. It did not look that interesting before the shot. I did the spot metering on the middle cloud and this is what I got.

This looks like the perfect candidate for a high dynamic range photo. I would take several exposures with different amounts of light, and then combine them into a final image that is evenly exposed and puts more light on the house and trees.