Looks pretty cool, I really like the effect that it creates and you did a great job of making the flames realistic in my opinion. I'm not crazy about the text but it does suit the sig. I also think that it's a bit too contrasted with the completely black BG and the almost white flames. It is a cool effect but it's not the greatest sig in my opinion. Maybe try taking a different background or something like that so that it's not so blank.