How to superimpose a mask realistically?

[pvcfig_01]

I've come up with this, but it still looks like a layer just placed on top.

http://www.singaporeanimenews.net/gm.jpg

How can I make this more convincing? So far I've tried dodging the edges but it doesn't really help.

[dataflow]

select the top layer then change the selection to "border" depending on the size of image, if image is small use a border of about 2px, if larger then use a border of a 5-10px
then use "Gaussian Blur" about 2-5px (your just blurring the edges)

[edgework]

I think there would be more shadowing inside the eye area, and along the underside on the neck.

[cainam]

The lighting of the mask is too flat. Change it.
Many ways, but I used two curves, one up and one down to change the incidence of light (and painting into the layermask).

[MatthewMarshall]

the mask looks way too small and its way too smooth looking, no texture to it like the rest of the photo.

[MatthewMarshall]

also the angle of the mask just looks off, it makes her look like she is all forehead.

[pvcfig_01]

Thanks for the help.
Here's my latest version.

http://www.singaporeanimenews.net/gm2.jpg
http://www.singaporeanimenews.net/gm...ws.net/gm2.jpg

What I did was

1. blur the edges of the mask slightly to antialias it
2. add shadows below the chin and around the eyes
3. adjust the mask contrast with a curves layer
4. distort the mask with distort and perspective transforms to make it slightly taper towards the chin area

I think it looks a lot better than what I started with, but still doesn't seem quite right.