Colors are very pretty, very rich. Clouds are interesting, although for my own desktop, possibly not sufficiently so. Not sure how to improve this, but my suspicion is, it has something to do with where the focal point is... somehow it just isn't up to your usual mark of excellence.
"The truth is, of course, that the curtness of the Ten Commandments is an evidence, not of the gloom and narrowness of a religion, but, on the contrary, of its liberality and humanity. It is shorter to state the things forbidden than the things permitted: precisely because most things are permitted, and only a few things are forbidden."
~G.K. Chesterton