Color painting has no three-dimensional effect because your whole picture is gray? Or is the color of your too uniform? There is no solid color (you always have a variety of colors to blend pigments, and some parts, such as apples, can be used directly without color matching? For example, deep red) and pay attention to the use of complementary colors. There are one or two things in every painting that need solid colors? So that the picture can be bright? . Besides, what about the shadow part of the object? Dark green and red are unevenly mixed to draw? . . . Before painting, add black and green to the shaped object with a pencil? Or a black and red circle? Draw with a black border when painting? Do you also press the edge when painting the background color? So that objects will be more natural? I don't want to go around like a circle when I'm done. be .................