Just me playing around with mah pencils and I decided to give it some flat color. o3o Mostly as some practice, since I want to make the alicorns look physically different in comparison to their pony subjects. :3
In my headcanon, the Alicorns would be kinda exotic in terms of appearance, and a little odd. Like, they're definitely pony, but their structure is obviously different than the norm. The way I see it, the alicorns would be slender and thin, almost reminiscent of a swan or even a deer, with long necks and legs and sleek body structures. They'd also have a noticeable curve to their horns.
Here, Celestia and Luna demonstrate the way I see the alicorns. I think Luna would have a body more like that of a predator built for speed, like a cheetah or a greyhound, while Celestia would have a slightly stockier build. Where Celestia thrives on raw power, both physically and magically, Luna would be more for precision and execution. Like... Celestia would be stronger than her sister, but Luna knows a wider range of magic and a far better grasp on how to control and manipulate said power.
Also, since folks have asked me how big the sisters where... Celestia would be around 7 1/2 feet, give or take a few inches, at the withers. Luna, being slightly smaller and shorter, would be somewhere around 7 feet at the withers, give or take once again. C:
Anywho. Every time I draw these two, the more I fall in love with them! D: And they're finally beginning to get closer to how I picture them in my own style, so that's a plus. C: And before anyone asks, Luna has bat-like wings on purpose. The way I think about it is, the closer she reaches the peak of her power, the closer she begins to resemble Nightmare Moon. Only, you know... she doesn't look corrupted, and remains very obviously herself. She'd gain the bat/bird hybrid wings, sharper fangs, tufted ears and slit pupils, and even a slightly darker coat, but that's about all. Although, like in canon, she'd still be able to take up the appearance of Nightmare Moon, usually in battle to further intimidate her foes... as if she needs help doing that, though. >.>
Same with Celestia; the fandom version of Nightmare Celestia, "Solar Flare", would be a more etheral and intimidating form she'd take to help scare her enemies.
As always, if you have any questions ask away. Other than that, though, thanks a bunch for stopping by to take a looksie at mah doodle. c: