Merging two pictures side by side

Hi

Make a new document the size you want to output.

Use File > Place Embedded to place each image into that document and move it into position. Each will be on a separate layer - make sure they overlap.

Select the top photo in the layers panel and use menu Layer > Layer Mask > Reveal all

Click on that mask in the layers panel

Select the gradient tool and in the options bar set the gradient to black and white

Pull out a gradient (click and drag) from where the overlap starts to where it ends

Dave