You cut out kitsunoh's face mask and stuck it on some gastly gas you made. Badly I may add judging by the fact that there's uneven edges everywhere and a black line going down its face. Do I really need to point out why this fusion-like sprite is a horrible idea? I was going to say a hell of a lot more about this but I decided it's not worth it.
Long story short, don't steal parts from another sprite. That is just plain stupid.
PS: Spenstar, you're really not making yourself look good here.
At least we've got a new piece of work here. You seem a bit rusty so I'll go easy on you. The shading is definately the weakest thing here. Try shading in blocks rather than the stringy almost random bits here and there. Dithering is not recommended. Parts of the body like the arms, base of the tail, and mask almost seem anarexic. Like they've been squeezed unnaturally. So you need to sort out the proportions a wee bit, perhaps something a bit like this (quick edit, nothing altered on mask):
Either way, the wisps the previous person recommended aren't something that are needed at all unless they fit your vision for the design of course. A lot of people seem to be going for the wispy body, single mask route so you should probably play around with this a lot! Get creative!