Some people draw the background separately from the characters, so that the continuity of the background will be better and will not be affected by the occlusion of the characters. The disadvantage is that the background and the angle of the characters are not suitable.

Some people draw the background first, then the characters. This method can solve the problem of angle, but it is easily influenced by the background when drawing characters, and the drawing is not so satisfactory.

For a single character, it is suggested to draw the general structure of the character first and then refine it, so that the composition ratio and character structure are not easy to make mistakes.

In detail, draw a nude picture (bald head) first, and then add clothes. When drawing clothes and hair, keep a certain distance from the skin surface, so that the clothes or hair will not cut into the meat and cause a flat head when drawing. You can watch the tutorial on Xueba, where I also watched it and taught myself.