Copy: copy the original painting, including composition, creativity, color, etc. Tell the original author in advance, and the original author will generally allow you to copy.
Two changes: the original author is dead and won't let you change. Two changes and two innovations will change the artistic conception and composition. If it is successful, it will have a particularly bad influence on the original author. So there is an essential difference between the two.
Learning points
Copy: Pro and Copy have their own advantages and disadvantages. Especially in calligraphy, the ancients said: "Linshu is easy to lose the position of the ancients, but more ancient brushwork;" Copying books is easy to get the position of the ancients, but it loses the meaning of the ancients. " This means that it is easy to learn strokes, but not easy to learn shelf structure; It is easy to learn shelf structure, but not easy to learn strokes.
In terms of difficulty, copying is easy and difficult. Whether approaching or copying, we should aim at "similarity" with the model characters, and gradually transition from "similarity" to "similarity".