In this tutorial, you will learn how to mask more then two images together and layering. Side note- ignore the order in the Layers panel.

These images are from BtVS Episode: Fear Itself. When I get ready to put a wallpaper together, I go through my collection. I try to figure out what will look good visually and what doesn't. I don't always use what I select. I sometimes go back and find something else.

Remember to make sure foreground is black when masking.

On your Layers panel, click on the masking icon (yellow arrow) and the white box will appear on the image you want to work on. Click on it and another masking icon will show up (blue arrow) next to the eye icon. I masked away the bottom of the image of the scoobies. I made sure I cleaned it up really good (no line).

I put the demon on the left side and masked away unwanted areas.

I put the frat house on the right side and masked what I didn't want to see.

I put the cast looking at hole in the floor over the frat house and set it on screen and then I masked it. I like the way the frat house peers through the cast

I added a cap that had symbols from Giles' book on the left. I don't want it to cover their faces. So I masked that away. It's just to fill in the gaps (orange arrows).

I felt I should fill the gap behind close up Buffy. I found a cap of Buffy that's from a distance. Visually, its prolly not the best cap for that area but I am too lazy too look on the screencap sites for more.

I found a cap of an open book. I put it on the right side. I didn't want on their faces but on just a little on their bodies was fine with me.

Last, I put a cap of old picture of the frat boys that was at the frat house. I just wanted something behind the scoobies.

The result is too dark. I want to lighten it. So I went to Image > Curves > and selected my settings.

So there you go. To see this piece go even further, check out this tutorial.