There are a few ways to Photoshop a head onto a body, but the most common is to use the Clone Stamp tool. To do this, first select the head you want to clone and then click on the Clone Stamp tool (it looks like a cross with a small circle at the top). Next, click on the area of the body you want to place the head on and then press Ctrl+Alt+J (or Cmd+Alt+J on a Mac) to clone the head onto the body. ..