PHOTO SHOP  

Lasso = L key
Quickmask = Q key
Modify the edge of selection  = Select/Modify/Expand
Turn the selection into a layer= cmd/ctrl J
Move the Layer to another Photo= Move tool =V key drag to another photo
Scale the layer= cmd/ctrl T
Copy the Layer= cmd/ctrl J

i took two separate photos of Alan sugar and a bag of sugar then cropped out his head and the put in on to the bag of sugar. I then duplicated the layers and placed them in different areas also played around with the pictures using different keys above.