I will be showing you how to mask two images together in this tutorial. I selected images of Buffy and Angelus from episode: Innocence when they fight in the shower at the mall.

For myself- I like to have two backgrounds- white to test my masking ability (test area) and black as the final backdrop (background).

You'll want to get your paint brush tool in the tool bar. Click on the paint brush.

You need to pick your brush size (red arrow). For this- I picked 100 and selected my flow at 18% (blue arrow). Don't worry about opacity at this point. This is what I usually work with when creating my wallpapers.

In your layer palette, you will want to click on the cap of Angelus. Then as a shortcut, go to the masking icon (orange arrow). Be sure to click on the white box (blue arrow). And make sure your masking icon appears next to the image you are working on (red arrow). If you don't do this, you will be painting over your image- not masking.

I took my brush over the left side of the cap of Angelus. Be sure to clean up really well. If you leave a line like I have indidcated here (blue arrow). It will show. It will appear on other screencaps and it will look funny. This is why I have the white test area. When I finish all of my masking, I go over each one and put it against the white test area to make sure it's clean. I also make sure all of the faces are clear from each other. If you don't, their faces will look dirty.

I took my brush over Buffy. I judge how much to take off. Remember you can always go back by deleting the white box. And start masking over again.

I got rid of my white testing area so that my black background will peer through. And there you have it. Granted, it's not perfect but it 'looks' like Angelus is behind Buffy.To see this piece go even further, click on this tutorial.