Fantasically creepy! Agreed with the other comments: those are only two of sooo many words that can be used to describe this! I've seen portraits like this with characters progressing to others. Hermione to Bellatrix and Harry to Voldie are such progresses, but never a portrayal of how a character ages! You are unique and this is a portrait that shows creativity, detail work, an incredibly accurate knowledge of the character within the portrait, and, well, this is the work of a GENIUS! *Awesome* work here!
I can't find words to tell you how genius this actually is! Not only because it's drawn so perfectly, but because you're the first one I see who thought about how his looks changed over the years. I totally love it!