@LaLa under photo details down at the bottom of the pictures page where it has views comments fav's etc. you will see "Edit Photo" and "with Picmonkey" next to it. click on "with Picmonkey" and it takes you to picmonkey for editing and then asks if you want to replace the photo you have posted with the Picmonkey edit! then you don't lose your comments or anything. you can do a lot in picmonkey! you can use it outside of 365 too very basic edits and collages etc are free or you can pay for upgrade.
