mostly using various filters in ps - starting off with clouds, noise and then playing with opacity and blending modes. i also created some dust / dirt in a seperate file using this tut (https://www.teamphotoshop.com/article...t-5,8,45a.html)
and then overlayed it using a lighten blend mode, though i don't think i actually did that on these 2. the models vary as i am still getting used to using photoshop. i only just discovered masks! how sad is that?