Goddamn this piece is amazing. I love how you took the usual color, lighting, and mood for this color and exaggerated it into something way cooler that really gives it life. You did a great job capturing the essence of Lapiz and I don't actually have anything in the way of criticism for you. I'd say to do a little more with the background, but the emptiness is perfect for the character and her mood.
And yo'- What school you going to?