This tutorial synthesis is just to provide some creative ideas. The specific operations still need to be performed by yourself. Some materials, such as stone patterns, moss, grass and other materials need to be downloaded online. After learning this effect, you need to be able to draw inferences from one instance and create more similar effects.
Original picture
final effect
2. Use the magnetic lasso tool to cut out the upper body of the character, then go to Image>Adjustment>Decolorize, copy the layer and name it the upper body layer.
3. Duplicate another layer of the upper body, called the upper body copy layer, go to Image>Adjustment>Levels, change the contrast, and customize the parameters.
4. Find a stone material picture and open it, drag it to the upper body layer in the file, then press ctrl to select the stone material layer and the upper body layer, then hold down alt and click between the two layers to create a clipping effect. The effect is as shown below.