How do I selectively blur one edge of a selection in PS CC? I have merged two photos together using layers (there was a big gap between two subjects) but the bottom edge of the upper layer is a bit obvious. I blurred the whole image and the bottom looked perfect but the rest was - well - blurred!
As always with Photoshop there are umpteen ways to achieve the same effect - this is how I would do it, I am sure others will have other ideas.
I am assuming that you have each element of the 2 combined images on separate layers.
Make sure the blurred image is above the non blurred image in the layer stack.
Create a layer mask for the layer that has the blurred image and then - using a black (probably soft edged) paint brush - paint over the part of the image that you want to make transparent.
You could also use smart objects - Before blurring the layer right click on the layer and convert it to a "Smart Object". Now when you apply the blur the smart object will automatically create a mask. You can then (making sure the you have clicked on the Mask and not the layer) use a soft black brush on the mask to paint away the blur effect.
Also do a search for tutorials in blending 2 or more images in Photoshop (the basic principle is that same across most if not all versions of Photoshop.