The next task we'll see how is it possible to picture a Mazda car, having its photo.

Find the photo of that car you want to picture out.
Make then everything corresponding to the photo.

Before:

After:

Open a new file: File - New (ctrl+n)



Having the Pen Tool now, draw the contours of our future car.



Then create a new layer (Layer - New - Layer) and move it lower than the contours' layer.
Paint it with the necessary color, applying Paint Bucket Tool.



Apply the same tool (Paint Bucket) to paint out the car's surfaces, differing a little by their colors. If it's not possible to paint because of the small plane's size, use the Brush Tool. All this actions you must do on the contours' layer.



Because of using before the Paint Bucket Tool, there were remaining several white stripes close to the contours. To get rid of them, you have just to copy this layer (Layer - Duplicate Layer) and combine it with the previous one, using next selection: Layer - Merge Down (ctrl+e).



Continue painting the car, applying Magic Wand Tool.



Mark out now each of the car's surfaces, using Gradient Tool and adding more nuances and reality.



In some places you'll have to change the color's nuance exactly in the middle of the surface (plane) and not on the edges. In this case you'll just change the paint type on circular one.