I'm not sure the lighting source matches, the scan itself has a lighting
source direction so it's best to follow it since it's hard to change the lighting effect
on a scan unless you vector it.

The light on the top right corner has no purpose there,
it's distracting and also it doesn't look like it's making any impact on the wall.

The textures are nice, I think their a bit too strong though on the scan,
it should be something nicer and smoother to fit the mood of the wall.

Also the left side of the wall has a very quick
change in light and dark which also makes it hard to see the gentleness
in the wall. I think maybe trying a bright blue will help to make the sky
look more happier.

Very nice background which makes some sort of peaceful feelings as for a summer sunny day. And that's what I need when the sky outside is gray.
Anyway, some of the textures and the scratches IMO don't match with the style since the wall is far from "old paper look".

But in overall it's another good wall from ya.