How to draw gouache coke

What your teacher said is wrong. Where did the transparent part come from? Is it white and transparent? It is colorless, which is the color of the object behind it. Just don't simply draw relative to the background and transparent parts you want to draw. Just tick off the outline of the bottle, but the color of the hook outline can depend on the color of the surrounding still life, which is called environmental color. Find a book and analyze it carefully. Heavy color is the color of coke. If the painting is good, I will add black and red, with heavy black and black red. Remember not to mix well. Hope to give points