I have kept these very plain and simple for a reason - in my science lessons (especially revision,) I print out and laminate the body organs and get the children to stick the different organs on each other where they think they go. They can write the name of the organ on it with a white board pen.
To add a label, put a text box over the different organs and set the background colour as 'no fill'
These are also very good for display work or can be shrunk to make into a work sheet.
PLEASE leave feedback, ideas and comments. I will gladly add any other parts you may suggest.