Well here's a good tutorial on how to create clothes http://www.earthcurves.com/tutorials/shirt_tute_0.htm You can construct your clothes that way to be flowing using that method in addition to a hard edged smear brush. For a see through fabric, you can always adjust the opacity of the layer once you're done, or you can set the brush with a low opacity so you'd have to repeatedly go over the same area with each new click to get some sort of layered effect. But that method would take some trial and error.