I was working in Photoshop CC and saved as I made changes. I added the teeth, skull, eye and saved. No problems. I added the background and saved, no problems. I added the flame and saved.....picture is destroyed. When I clicked saved it changed the image and now the background is only partially there, the flames have parts missing, the dog has parts missing, and my once done picture for a class assignment is destroyed. If there is a fix, please help me. Otherwise I am going to have to go back and redo everything. That will waste far too much time because I have 3 other assignments to do and that does not include making posts on the student website and watching video tutorials for the other assignments.
Here is the incorrectly saved version as a png of the image after it was saved so incorrectly from what it was: