The first step: Copy the layer, then select the Channel, click on the picture
The "Load channel as a selection" on the left below
Step two: Back to the layer, press the shortcut key "Shift+ctrl+i" reverse selection, and then press "ctrl+j" copy layer, and finally select "Filter Color" in the layer, this time the whole picture will become more translucent.
Step three: Click on the panel to create a new fill and adjust layer, pop up the image below,
At this time, we focus on adjusting the model's clothes to white