GP2 Modeling, Rendering and Compositing Tutorial
I then apply masking on the render below.

I added another layer of the rendered shadow just below the car and then made the layer to "Multiply". I loaded this composites to the edited track plate. Here below is the composite.

I edited the second car, same process as above.

Selected the alpha channel.

Apply masking to the render.

And add the layer on the track just below the first car and applied motion blur to get a depth of field. Below is the final result of the composited image.

Got to next page to view gallery of composited renders.















