MERGE is a graphic utility for overlaying two images in any relative position prior to saving the result to a file and printing.
You can merge the two images in many different ways as well as smooth blending in of just part of an image to the final result.
There is a batch merge feature which is useful to watermark all of your favorite pictures.
There is an option to fade out one image and fade in the other image towards the edge of the final picture.
Merge also allows text entry of any size, font and color to be merged with an image.
No need to worry about image relative positioning, size or scaling differences.