[Composite image with black line after export.]

Thanks for the answer, Brian.

I removed the background from the town picture using affinity photo. Saving it as a PNG so that it will have a transparent background is simply the only way I've learned so far. It sounds like you are recommending doing the overlay of the town onto the mountain scene in photo as well. That sounds like a much more efficient way to proceed, for sure, and doing that would definitely do away with the black line problem.

I have all three software tools and I'm trying to learn how to use them by watching videos on Youtube. I've only been working with them for a month, so I'm really clumsy, so far.

Thanks again for the reply. I appreciate any guidance that is offered.

[Composite image with black line after export.]

Thanks. How did you accomplish this, and why was the line in the png to start with? It wasn't visible in the source file. Is there 

something I need to do when exporting to png to prevent this happening? 

Sorry, I'm a total graphics Noob. 

[Composite image with black line after export.]

I am working on a composite image. The main layer is a jpeg image, 1652X2500. The top layer is a .png file of buildings. This image is cropped by affinity photo.

The exported image contains a black, horizontal line running the full width of the image. It appears to be the top border of the .png file. The transparent section is indeed 

transparent but the border appears to be persistent.

I haven't been able to attach all the files. When I try to attach the main layer, I got the server error. 

Any help would be appreciated.

Ghostly Abodes.afdesign