Your room should look like this now.
I darkened the sky very little bit.
Open the model image and select her with the marquee tool. Press Ctrl + C to copy. Don't select the legs as she is going to be a creepy doll and people without legs intensify the "freaky" feeling. Paste the model on top of all the other layers (Ctrl + V). Fun fact: the model is my best friend Birgitta, wearing my graduation dress in an abandoned machine factory.
Grab the Pen Tool (P) and make sure these settings are used. Carefully go over the outlines of the model. I prefer the Pen Tool because it gives you effortless and fast selecting - and if you misclick, you can just press Ctrl + Z and continue (unlike the Lasso Tool).
Leave the veil as is, it's almost humanly impossible to cut it out (and it's not the point of this tutorial either).
Here the ends meet - click on the first point to complete the path.
You will have a nice line that indicates your path is closed. Now right click anywhere on the image and choose "Make Selection" from the drop-down menu. Make sure you use the settings shown for the feather radius.
This is your selection now; hit Ctrl + Shift + I and then Delete. I usually press Delete twice.
This is how it looks when cut out.
Take the dress form and place it on a new layer under the model.
Now select models head (since it's an unimportant selection, you can use Lasso Tool - you don't have to worry about the exact edges etc). Then right click and choose "Layer via Cut" to behead the model... for a few minutes. After that, press Ctrl + D to release the selection.
Press Ctrl + T to enter Transform and make her head larger by stretching from the corners.
Go to Filter > Liquify and enlarge her eyes with the Bloat Tool.
Add more doll features - tiny nose, small and full lips, pointy jaw.
Retouch skin with the Healing Brush. A slight plastic-perfect look is even good here.
Now go to the neck part and erase the sharp corners to make her neck really slender.
Neck looks like this now.
Paint the gap by picking colours from the skin areas around the gap. You don't have to be precise, just make sure the lighting is right.
Merge the head and body layers together and use the healing brush to blend everything.
The cheeks looked strange so I went back to Liquify and fixed them.
Looks like this...
Time to colour correct the doll. Move the Vibrance slider to left (-50). Then go to Image > Adjustment > Hue/Saturation and choose "Reds" from the drop down menu. Move the sliders to make the skin more pale.
The eyes have too little contrast. Use the Dodge Tool on Midtones and low Exposure (10-20%) to lighten the areas painted blue; and the Burn Tool (also set to Midtones and low Exposure) to darken the red areas. You should use a small brush, something around 5-15 px. Make sure it's soft rounded.
Looks like this so far.
Create a new layer on top of the model layer and grab a soft round brush. Paint the red areas with a greyish blue colour (#567190 is good, for example). Set the layer mode to Overlay.