One: dig out the whole backpack

1. First, copy the blue channel in the channel.

2. Adjust the color scale of the copy channel, basically adjust the whole package area to all black, and then black out some leaks in the package with a black pen.

3. Load the channel as a choice.

4. Open the rgb channel.

5. Go back to the Layers panel, select the layer where the backpack is located, and click Delete to dig out the whole package, which is the "original" layer in the picture.

Two: use a pen and other tools to dig out the part of the backpack without camouflage patterns (please adjust the details as appropriate)

Such as "zipper", "decorative tape", "figure" and other parts, that is, the "cut part without disguise" layer in the picture.

Third, add camouflage cloth material.

1. Put it under "Cut-out without disguise"

Above the "original picture"

This is the "camouflage cloth material" layer in the picture.

2. Convert "camouflage materials" layer into "original image"

Clip mask of layer

3. Apply the "liquefaction" filter and tools such as deepening and lightening to create a three-dimensional effect (or apply the shadow distribution of the original image, which I won't say, because I won't).

Four: color matching and finishing

Appendix:

The layer structure is roughly as follows: