How to do this is photoshop?

1. 2017-01-22 at 2:55 PM UTC

   #1
   The Self Taught Man Black Hole
   
   
   I am trying to learn photoshop, I want to get the same pattern as the image above, see the see through pattern on their body and legs? Are there any tutorials you can link me to help me learn to do that?
   
2. 2017-01-22 at 3:37 PM UTC

   #2
   

   aldra JIDF Controlled Opposition
   image is pretty small so it's hard to see, but it looks like you could get similar working with layer transparency
3. 2017-01-22 at 3:39 PM UTC

   #3
   

   aldra JIDF Controlled Opposition
   http://www.axialis.com/tutorials/tutorial-misc001.html