u followed the tut to make the fire on the hand, right? Great outcome.
About the burning..
This is called photo manipulation what u r trying to do.
It doesnt seem like he is burning..U know how paper looks when its burning, right? Try to make it like this, or erase some parts, and use like splatter brushes or so with a clipping mask , so it would seem that some part of him is burned soon and the winds is taking away the pieces.
Btw, did you follow the tut i gave u? Did u make a sig with it?