Putting an outline to A bitmap picture

I need to know if there is a way to put an outline to a photo? I do laser engraving and I would like to make the laser cut around the form of a picture. To do so I need to put a red line around the area I want cute out. I went to edit bitmap and the went to cutout lab and cut the background of the picture out. Now I want to apply a outline to the area I have left. I hope I am explaining  this good enough so someone can help.

 Thanks Courtney