Car Sketch tutorial for a 3/4 front view in 3 steps:
Linework, proportions and perspective
Lets add details about creative layout like body sections and front face details
Lets finish it correcting some lines for overall shape control, reflections lines and shading cross hatching with the ball point black pen, front face tune up, wheel design, some transparent effect on wind-shield and side glass, last the shadow on the ground.
This is just a simple tutorial and not a design creative proposal.