I want to superimpose a bitmap picture onto a photo of a laptop screen. To do this I need to change the perspective of the picture so it "fits" the laptop screen. I have discovered how to scale the picture and rotate it so it is approximately in the correct plane, but I cannot find a way of distorting the perspective of the photo so it matches the perspective of the photo of the laptop screen. Is it possible to distort a bitmap picture by dragging the corners or edges? Sorry, I don't know all the correct technical terms to describe this – I hope I have managed to make it clear. Any help much appreciated.