I'm not normally the biggest Mystique fan, but this is fantastic work! Looks just like the real deal, even down to her yellow eyes and skull belt!
Excellent pose too! You captured her personality perfectly!
Lastly, but not leastly, it's awesome to see a great cosplay of the comics version of the character and not just going with the movies-version. Who ever would have though that the comics version of anything would have been easier to do and more practical?