Is that supposed to be some lassie's burnt corpse? That's honestly, like... not... good...
I don't remeber how you make freshly burnt corpses, but I don't think this is quite it. I think what you did was use an airbrush, or some other partially transparent thing, for the burnt stain effect and also the multiple layers of yellow-orange-red, and then started removing some of thier edges with a regular eraser, and now some of the stains end neatly, and others like the huge one between her eyes are just...weirdly cut.