I read a wonderful HarryxTom fanfic titled 'Noir Et Blanc' (http://www.fanfiction.net/s/3280842/1/Noir_Et_Blanc) that included vampire!Harry who travles back in time and falls in love with Tom Riddle/Voldemort.
Its wonderful written, and has a yet-unfinished sequal titled 'Un Coeur Gris'.

As to the pic, I was practicing drawing vampires and suddenly realised that with a bit of colour, I'd have a rather good depiction of Harry (He goes by Aspen Noir in the story) as he is in above mentioned fanfic.

The hair was rather anoying as I wanted it to be black but save myself having to fill in lots of white and forgo individual strands, so I decided to use a trick that I found in a doujinshi that creates the illusion of dark hair - and I think it turned out rather nicely. The hair is a bit longer than it should be, and a bit waveyer - but I think it adds to the 'feel'.

Oh, and the snake's name it Letalis - just so you know

drawn with 2b pencil, black felt pen, watercolour paint, and touch-ups (cause my scanner hates me) done in Painter Essentials 4.