I gave the 5 stars on Vision because of the pure beauty and the fact that it does actually catch ones eye. As for the originality I took off a star because I've seen far to many cloud pictures and sometimes they don't stand out enough. Yours did grab my full attention though! Also it is very nice in all rages really! Technique was very well done, nicely balanced out to leave a good impact! I enjoyed it very much over all! So well done and I can't wait to see more!! Also do note the lighting and shadows in this is what really grabbed me until I looked more, it's almost as if the clouds told a story.
It's simply amazing! I love the details here, the colors, clarity and shadows. Also the composition and the correct horizontal line are very nice! I'm impressed how you're learning and improving fast. Congratulations, my friend!