Hand sketch of rear of the car

Now, i am drawing the back of car to work out the initial shape.

 At first, i draw two lines. The one is the border of window, the another one is the bottom line.

 Then, put a window on it, that has been adopt in side view design process.

 Next, i outline the rear.

 Symbolic air intakes.

 Then, i put two wheels to make the car look real and comfortable.

 The line of symmetry helps to estimate the position of things like, light, air exhaust.

 Adding more details.

Finally, it is necessary to draw wheels and shadow or it seems the car is floating somewhere.Otherwise,this gives more effect of perspective as well.