I knew it wouldn't be long before I'd see some Elsa artwork from you, and I'm glad to finally see some since she is by far my favorite from the movie.
The picture as a whole is beautiful, I love how you've colored her eyes and lips, they really stand out to me. Her expression is beautifully portrayed too: I can sense the softness of her character.
The only fault I can see on the picture is the lack of shading on the dress itself, which makes her look a bit flat-chested (nothing wrong with that, as I'm flat myself lol) but maybe a little shading there would make it look a bit better.
Other than that, however, I can't find anything I can really complain about. The hair is nicely done, as are the snowflakes. I really love this one from you!