For the exam, or for passing the exam, the surprise attack is not ineffective, but it takes a long time to get real talent and practical learning.
When learning to draw, you should concentrate, and never be half-hearted. You should also pay attention to understanding with your heart. Although painting a picture is different from painting two pictures, people who are attentive will achieve better results.
If you learn anything, you will fall in love with him. If you treat him with your heart, you will succeed in the end.