PS Elements 5 Help- Removing Seams in Poster Board Lightbox

[AnnikainChautauqua]

I have a diy poster board light box with 4 work lamps clamped on the side panels.

I am using PS Elements 5 to edit and use the clone stamp to remove unwanted stuff like seams and dust. The issue is I can see the blotchy stamps when viewing my photos. Is there a cleaner way to remove seams and other imperfections?

Thanks!
~Mary Beth

[Former_Member]

I will make a selection of a nearby seam free section, make a copy of that selection (ctrl-J), drag the new layer over the seam. At this point you may need to erase any hard edges in the new layer. Also try lowering the opacity of the clone tool when you use it as things tend to blend better.
Hope my explanation has not been too confusing.