Turn any photo into a dot grid artwork with these Photoshop actions. You'll get great results with dots that change size. They get larger in brighter areas and smaller in darker areas. Free download available.
Back to "Smoke stock 25". Change blending mode of this layer to Multiply. Darker parts will be visable, lighter will be removed.
Back to layer with "Smoke stock 20". Hold ctrl and click on layer with "Smoke stock 20" and on clipping layer with Invert. Drag it and drop to "New layer symbol".
Drag duplicated content on the top of layers. If you need, you can mask parts of smoke by clicking on white canvas next to this layer and using big soft brush.
Place and mask "Nordic warrior" stock. Character have to be bigger, because he is standing closer to viewer than monk. See the red guides. For masking character, use small brush. Why not Magic wand tool? Shape will be really rough and edgy. For bigger precision use brush on mask.