Transform a Girl into a Robot

So let's start

This are the images we will need first one is with Maggie Grace ( a very nice girl ) , the second one is with a space shuttle , and the last one is with a circuit board:

Create a new Layer. ( press Shift+Ctrl+N )

Select Pencil Tool and make a drawing like me. The next will be a guide for our next steps.

Now create another layer ( press Ctrl+Shift+N )

Select the Pen Tool and make the following drawing:

Click to enlarge

Click to enlarge

And now the last point should be over the first point ( please notice that a small circle will apear )

After that Keep the Ctrl key pressed and click one time on the layer like on the following image:

You will notice that you have created a new selection.

Now with this selection turn all the layers to invisible

To make a layer invisible you have to click on the small eye near the each layer ( please notice the small red circle - there you have to click):

Now select the background layer from the layer palette and press : Ctrl+Shift+J ( this will create a new layer via cut )

Do the same for the other part. Then with the arrow keys move this 2 layer like mine:

Now we will need the space shuttle image:

Open the image and with the move tool place it over this image:

Drag the layer over the background layer and change the opacity to : Difference

Then place the image , rotate it like me:

Click to enlarge

The select the Erase tool and start deleting the part we don't need:

Now you have to add some shadows and the Robo Girl is ready.

You can create the same for the arm

This is the image i have created with the same techniques:

Click to enlarge