1. After preparing painting tools, observe the approximate width and height of tomatoes. If you are not skilled, you can shape them with a pencil first. Skilled, you can use a fan pen to shape directly, mix a little water with cooked brown, and gently draw the outline of tomatoes and the projection of objects.

2. After drawing the basic shape of tomato, start to add a little gray with red and white, and fill it with the outline of tomato. At the same time, draw a projection with cold pigment, and pay attention to the color change before and after projection.

3. Start drawing dark parts, turn red into green with a fan brush, deepen the color of dark parts, and also bring the heavy color of dark parts of tomato leaves to project a foothold. Pay attention to the direction of strokes and pens.

4. Paint white powder on the gray surface and bright surface, medium yellow, yellow or red in the warm direction, and Gamar Dave or other greens and blues in the cold direction. Add white powder to brighten the surface and highlight the original and back, so that you can draw gouache tomatoes.