You can find pictures online to copy.
You can also find suitable models, material painting, and material painting may be quite responsible, just choose the one that suits you.
Copy, a Chinese word, means to imitate writing or drawing as it is.
Lin means writing or painting according to the original work.
Copying is to use thin paper (silk) to cover the original work to write or draw on it. In the broad sense of copying, what is copied is not necessarily calligraphy and painting, but may also be steles, calligraphy, etc.
Copying is for learning techniques, focusing on the process of copying, and obtaining copies for preservation, restoration, exhibition, and sale, focusing on the results of copying.