Wall Texture

1) Open a new document white background add some Noise Filter --> Noise --> Add Noise Settings
check both
Gaussion & Monochromatic.

3) Go to Filter --> Stylize --> Emboss settings are 145 degree Angle Height=2; Amount=25; now you can change the color with Hue/saturation have fun.
3) Here is what I came up with
I have added some scratches,
moss and a cut out text.