To shade tomato, it is necessary to find out dark and light sites at first. Greens itself dark, under it are a shadow, then there is a patch of light (we leave a place not touched), on each side and in the middle of tomato patches of light very dim, we will put them with a rubber after shade all tomato. Shading is carried out by lines closely to each other, thus we do transition of shadows. Below and on each side is more dark, than in the middle. Also there has to be a smooth transition to patches of light. On a leaf at me tomato width of all 5sm, was scanned it here in such big permission so, all is visually visible.
And now look how to draw some tomato on a branch with leaves in color.