It was much easier than normal photoshopping, because there were multiple pics with everyone in the same place.
↓ Transcript
Panel 1 (Errol is on the computer) -
Errol: So I layer them on top...and it's done.
Leezet: WHAT?!
Panel 2 -
Errol: I'll email it to you.
Leezet: HOW DID YOU DO THAT?
Panel 3 -
Errol: Then you can get it printed.
Leezet: THAT'S ALL IT TOOK TO DO?!
Panel 4 -
Errol: Could you leave? I want to play my game.
Leezet: BUT IT LOOKS SO GOOD!!
Errol: So I layer them on top...and it's done.
Leezet: WHAT?!
Panel 2 -
Errol: I'll email it to you.
Leezet: HOW DID YOU DO THAT?
Panel 3 -
Errol: Then you can get it printed.
Leezet: THAT'S ALL IT TOOK TO DO?!
Panel 4 -
Errol: Could you leave? I want to play my game.
Leezet: BUT IT LOOKS SO GOOD!!
A magician never reveals his secrets.