First, there was only a single layer of wallpaper that was on the wall and the wall is bare. It appears to have been primed (I think thats the term for it?) but there are some areas where you can really see the green board well. Besides washing all of the residual wallpaper glue off, spackling areas that were damaged in the removal, and priming… is there something else I should be doing? Any help is appreciated, thanks!