This is really simple actually. Before 당신 get started, make sure 당신 have some textures.
Click Image ---> Adjustments ---> Treshold. 옮기기 a little cursor to increase/decrease visibility.
Click on your background image on the panel on the right and instead of normal choose screen,lighten 또는 similar.
Before 당신 do that, 당신 need to unlock background layer. You're going to do that 의해 double clicking little lock on the background layer. Then add textures.
In this Elena photo, I used a link link
게시됨 to this spot.
You should have something like this.