You need to check copyright information kiddo... you ASK permission from an artist to use their image BEFORE you do anything with it..
1) What you did is 1) Not nice
2) Illegal
Frankly I am not too bothered by this but others would seek you out (or your parents) and make you pay for copyright infringement. So be aware of this in future.
FYI... I HATE ANIME,,, TOTALY... I did not look at the link originally as I can see enough from your avatar, There is NO WAY I would have given permission for my work to be used in this way so please remove your image, My 4 year old can use colouring books to paint between the lines... can't see why Anime "Artists" cannot do likewise!