First we need a photo of a car and a photo of graffiti I took these:
We place the drawing of graffiti on the image of the car.
If you work with a color machine, then it must be isolated and discolored. Duplicate the graffiti layer twice. We will have 3 layers with a pattern, change the layer blending mode to overlap.
We take 1 layer with graffiti, Click ctrl +t, right click click and choose the slope and rotate the image on the slope of the car body.
Now select the body. Use tools for this at your discretion.
Without removing the selection, go to the layer with graffiti, turn on the visibility of the layer with graffiti.
Invert the selection and press delete. This is what should happen.
Adjust the eraser some details. Now select the hood of the car.
Turn on visibility for the second layer with graffiti. Go to him and do the same work. Invert the selected area, click delete. Get
Repeat this work with other parts of the body.
Author: Negulyaev Andrey.