Attaching a border layer to the outside of different sized pictures

Ok. I make a nice border layer.
Now I want to use this border on a lot of pictures of various sizes (jpeg). I want the border on the outside of the picture so it does not encroach on the allready croped picture (like: filters/Decor/Add border).
What is a fast easy way to add the border and resize it to fit each picture ? Thanks!!!!!

Well I am not really sure what you are talking about, but I will try my best to help you.

The easiest way would be to go to your Border image, go Image>Scale and scale it to the proportions of the other image your want it to be the border of. Delete the background layer of your Border image (if there is one) and then just copy visible and paste into your other image.

I think this is what you need, but I am unsure, so please reply saying whether this solved the problem or not, and if not then please explain your problem in more detail.