Designers should learn various knowledge and skills to improve their design ability and professionalism. First of all, designers need to learn design theories and principles, including basic principles such as color, composition and proportion, as well as understanding design styles and trends. Secondly, designers need to learn the use of professional design software and tools, such as Photoshop and Illustrator, as well as other auxiliary tools and technologies, such as 3D modeling and animation. In addition, designers need to learn user experience design (UX) and user interface design (UI) to understand users' needs and behaviors, so as to provide a better design experience.

Designers also need to learn user experience design (UX) and user interface design (UI) to understand users' needs and behaviors in order to provide a better design experience. In addition, designers need to learn to cross-cooperate with other fields, such as marketing and brand planning, so as to better understand and meet customer needs. At the same time, designers should also pay attention to the cultivation of art and creativity, and stimulate creativity and inspiration by studying painting, photography and art history. Finally, designers should also pay attention to the accumulation of practice and experience, and constantly improve their design ability by participating in projects and practical work.

Designers also need to have some basic communication and teamwork skills. Designers usually need to communicate and cooperate effectively with customers, colleagues and other related personnel to ensure that the design scheme can meet the needs of customers and get the support of the team. Therefore, designers need to learn how to express their design concepts and ideas, and be able to understand and explain customers' needs and feedback. In addition, the designer should also have certain project management ability, be able to arrange time and resources reasonably, and ensure that the project is completed on time.

Designers should also have certain research and learning abilities, and pay attention to and learn from design trends and new technologies. The design industry is changing rapidly, and new design concepts and tools are constantly emerging. Designers need to constantly learn and update their knowledge in order to keep up with the development and changes of the industry.

Designers should also have certain critical thinking and problem-solving ability. In the design process, designers may face various challenges and problems, and need to be able to analyze and solve these problems and provide innovative design solutions. Therefore, designers need to cultivate their critical thinking ability, be able to examine and evaluate their own designs, and constantly improve and upgrade.

In short, designers need to integrate various knowledge, skills and abilities, and constantly learn and improve themselves in order to become an all-round designer.