It's really hard for me to ask the painter for advice. I taught myself.

Several major problems in the current picture:

1, the characters are dynamic and stiff, and their heads and necks are unnatural.

2. The position and shape of the ponytail of the hair are wrong, and there is no change.

3. The contrast between the hair and the background is too low, which makes the head of the character lean back infinitely.

4. The edge of the pen used is too vague, so use hard pen and soft pen.

It is suggested to start with line drawing first, so there is no need to draw in a hurry. You can't learn to draw until the characters move naturally and there is no problem in inserting blocks. Painting is a flowing process, so you can't rush it. In addition, learning painting begins with looking at it. When learning modeling, you can refer to the sketches of some sketch masters and learn to learn lines in blocks. If you look up, you can see the uncomfortable place in the picture.