1. Draw the outline of the big truck first, that is, the body and front of the big truck. You can use simple geometric figures such as rectangle, triangle and trapezoid as the outer frame first.
2. Then, on the basis of the outline frame, refine the outline of the truck, pay attention to proportion and symmetry, and draw details such as wheels, axles, fenders and windows.
3. Then, draw the details of the truck, such as lights, rearview mirrors, doors, radiators, windshields, etc.
4. Finally, on the basis of contours and details, colors and shadows are added to make the truck look more solid and real.
It should be noted that when drawing large trucks, we should pay attention to proportion and symmetry, and at the same time, we should create according to the actual characteristics and shapes of large trucks to make the drawn large trucks more realistic and vivid. In addition, you can refer to some pictures or videos to learn the shape and details of large trucks and improve your painting skills and level.