This is a commission by the amazing  Lhuneart of Sianna. She does absolutely fantastic art and it was so fun to watch her make this.

This was composed from the description below:

Sianna is a red dragon with a fondness for fire. She is more fine-boned than other lizards and radiates an otherworldly strength and grace. Though serious and serene by nature, she enjoys relaxing and goofing off on occasion. She at times forgets that others are less serious and thus appears gullible or misses sarcasm in conversations.

Physically she is approximately 40 feet long and 15 feet at her shoulder. Her neck is long and allows for ample reach with her jaws. She has a narrow snout with small nostrils and coppery red eyes. Her horns are long, black, and slender, arching gently convex from her neck and tapering to very sharp points. She has long ears that are flexible and reach about halfway on the length of her horns and are a light peach, like that of a conch shell in the inner lining. Her ears have one folded edge along the top and are thinner at the lower lobe. She has a black mane that slides down over her eyes on occasion and is actually comprised of modified scales that are long and thin. The mane traces down her neck and ends around her shoulders. On her belly, her scales are a pale peach/tan which starts under her jaw and continues to the tip of her tail.

Though as a feral dragon she has paws, her fore paws are as versatile as hands and are only slightly foreshortened compared with human hand proportions. She has long black talons and the space between her digits/paw pads are the same color as her inner ear. Her hind paws are less mailable and sport much longer, thicker talons and only 4 digits. They are also much more muscular and display the strength of being able to launch herself into the air. Her tail is long and muscular without adornment along the spine or at the tip, only the belly scales until they fade into the red of the rest of her body. Her wings are typical 'bat' wings in which the bones resemble modified finger bones elongated to allow for flight. The skin across the bones and muscles matches the red hide of her scales while the ventral membrane is reminiscent of her belly coloration.

As she is a Mage, she will sometimes have black runes 'tattooed' most frequently on the dorsal side of her wings which remains the deep red of her primary scale color. These vary, though generally appear as some sort of tribal pattern.

Original version (and check out her gallery too!): http://www.furaffinity.net/view/10238009/