first we will get these pictures from the sottp press conference courtesy of amber-tamblyn.net.
paste both of them into psp.
make a new image and set your settings like mine.
resize both your images. (SHIFT+S)
paste this picture as a new layer in your blank image. (CTRL+L)
on the toolbar there is a tool that sort of looks like a jagged box (should be the second one, under the arrow/hand). click on it and move the picture to the far left.
paste the other picture, but this time move it to the right of the other picture.
go to your crop tool (under the layer mover thingy), and crop the checkered part of the image. your image should now look like this.
click on your eraser brush and choose appropriate settings.
erase the part that is covering amber so it looks blended. you may have to move the right picture over to make it look better. if you did move, crop the image to your liking. your blended product:
now go file > export > jpeg optimizer and set the settings to your liking. you're done!