Well... I originally drew this picture for Snape's Birthday (Which was January 9th)...... But, since I didn't get it finished in time, I decided to wait till Alan Rickman's Birthday! Because, you know, he is the Actor of Severus Snape!
So...... Happy Birthday Alan Rickman/Severus Snape! ^.^

Oh! If you wish to see it in better quality, go to this link:

http://thecoffeefairychan.deviantart.com/art/Happy-Birthday-Severus-Snape-78015058