Avatar- Last Airbender Fanart

Fanart I did as a Birthday gift for a friend. Those Japanese Kanji mean something but I cannot for the life of me remember. I think it was Warrior of water[something like that] and Blue Flame (respectively). Now whenever I do fanart, I don't do exact copies of the original designs, I do take artistic freedoms with them as most fans of the show would probably have notice by looking at this.