What are the essential skills and tools required to become a successful WordPress web designer?

To become a successful WordPress web designer, one must possess a solid understanding of HTML, CSS, and JavaScript. Familiarity with PHP and MySQL is also necessary for more advanced customization. In addition, proficiency in design software such as Adobe Photoshop and Illustrator is essential to create visually appealing websites. Familiarity with WordPress themes and plugins is crucial, along with knowledge of responsive design principles to ensure the website is optimized for all devices.