Pictorialism is described as a style of photography that emphasizes a creative approach to subject matter, tonality, and composition rather than the more traditional documentary approach.
Just as a painter might add strokes of colour, light or texture to their composition, selective layering can achieve similar results for the art photographer. The process involves blending the original subject photograph with multiple additional images which among other things might include stone, glass, metal, water, paint, line art, etc. Each of the images in this collection uses this approach to achieve a unique final composition.
You can also find more pictorialized images in my Vintage Camera portfolio.