even without wings you made her look extraordinary beautiful. We all know that a pony becomes an alicorn by being fully developed and that the unicorns where the ones that raised the sun and moon with their magic before the events of hearts warming eve. Cadance was formerly a Pegasus, personally my speculation is that celestia and luna where once Unicorns ^^
I just love the way you use colours... seriously, it's something each and every piece of yours has which make them stand out so much; that, and the amount of beauty they have XD. Oh and I also must note that your shadowing and lighting are very smooth, they almost look like perfect gradients. It's also worth mentioning how the mane and tail were done, each of them blend marvellously with the colours they have, the background and Luna's color scheme. Background's just gorgeous too, I repeat myself with how you use colours... it's just awesome.
Keep up the gorgeous work! It's always nice to see your art.