1. Basic knowledge: Understand the basic concepts, techniques and historical background of calligraphy and painting, which can be learned by reading related books, attending training courses or consulting professionals.

2. Observation and imitation: Observe excellent paintings and calligraphy works, learn their composition, lines, colors and other skills, conduct imitation exercises, and gradually improve their painting level.

3. Keep practicing: calligraphy and painting need long-term accumulation and practice, and adults should also keep studying and practicing and constantly improve their skills.

4. Pay attention to basic skills: The basic skills of painting and calligraphy include brushwork, ink painting and composition. Adults should pay attention to the training of these basic skills and lay a good foundation.

5. Cultivate aesthetic ability: appreciate excellent calligraphy and painting works, cultivate your own aesthetic ability, and improve your understanding and appreciation of art.

6. Explore personal style: On the basis of learning and imitating, adults should gradually form their own unique style and form their own painting and calligraphy characteristics.

7. Communicate and share with others: participate in painting and calligraphy clubs, exhibitions or communicate with other painting and calligraphy lovers, share their own works and experiences, learn from each other and make progress together.

In a word, adults need to study and practice persistently, pay attention to the cultivation of basic skills, cultivate aesthetic ability and gradually form their own unique style. Through continuous efforts and practice, adults can make progress and achievements in the field of painting and calligraphy.