Render the colors inside the selection. Or copy the layer into a separate layer.



I will also apply some layer styles to this small object.











I will add some black to the rear end of the vehicle (on a new layer).



And erase back some parts.



Erase the edges for good.











I’m using the eraser to maybe change a little it some shapes of the car.











And we are finished with that.

The background effect was made by Shape transformed basic round rough edged brush.

Scattering is set to Pen Pressure; Opacity Jitter is set to Pen pressure. Size and Shape jitter is also set to pen pressure.

And, so, enjoy my concept. Will be better next time.







Enjoy and try it!