How do you clump pictures together?

Question

like, how people do icon layouts and clump pictures together, how do you do that?

Answer 1

Simple Photo Shop!

          

Answer 2

You mean "Blending"?

Open up a blank page in photo shop to the size you intend to use. Now cut / paste your 2 pics on this blank page and resize them to fit.

By clicking on each pic individually, you can manipulate and move them around.

Now if you click on any one of them and use the transparency or lens filter, you can merge the two pics as if they were taken one on top of the other or to give it a fading effect.

Usually, if you click 50 % on each one, the blend is good. Experiment with it.