atestu answered:
I usually add a light gaussian blur.
briandickinson answered:
I much prefer to overlay a texture and then it can be more random, try the texture of canvas, paper, or an actual drawing or painting.
jeffkoromi answered:
I use a 50% grey and add the noise or grain to that, then use an Overlay blending mode. Tends to work well on both black and white.
anoceanandarockaway answered:
I do mine like Kevin - noise, blur, maybe another layer of unblurred noise.
santailax47 answered:
I’m learning however I have an old version of photoshop, I have corel paint 8, not what the industry is using right now. I need the software