Layers task

For this task I dragged opened the brick wall photograph in Photoshop CS5.  I then opened the photograph with the 3 children on and the flower photograph.  I dragged the brick wall photograph onto the flower image, then dragged the children image onto the wall.  I then used the Opacity button and set this to 42% which merge the images together.   Each of the 3 photographs is a separate layer so if I wanted to move them around I had to click on the relevant layer shown on the right hand side listed under Layers and then onto the photograph where the layers were and could move it around.