This is a fanart for a fanfiction, in fact the best HP/TR fanfiction I ever read!
The story's title is "Wand Cores", written by Lydia-kitten (on fanfiction.net) It's about a 25years-old Harry Potter who travels back in time and finds a young Tom Riddle. It's incredibly well written, has very good and unique plot and character development and just gets you addicted! Lydia-kitten is a genius writer! So, I felt the urge to draw fanart for it (first time I ever drew fanart for a fanfiction....)
(And I'm very sorry for the bad anatomy, I tried a different style since I thought my usual chibi style wouldn't fit here.) x_____x;;
PS: You can find the story very easily if you type "wand cores" and "lydia-kitten" in google. Alternatively, I can send you a link via note.