The last time I replaced a photo using Picmonkey it was really easy... just open one from your computer and save it over the top of the one you had opened with Picmonkey. I no longer see where I can do that, has it changed?
In Picmonkey, up at the top there should be a button that says "Save". When you hit that, it will then ask you if you want to replace the image. Once you choose yes, it should overwrite your previous shot. :)
@dyanstevens@frankhymus if you go to the butterfly there is an overlay option, just upload a file from your computer over the top and save without applying any blend modes.
@dyanstevens As Frank said you can no longer "open" a file as you used to be able to.