To become a DevOps consultant, you should start by gaining expertise in DevOps practices and tools through self-study or professional training. Acquire hands-on experience by working on DevOps projects and collaborating with cross-functional teams. Obtain relevant certifications such as AWS Certified DevOps Engineer or Azure DevOps Engineer Expert. Build a strong professional network and create a portfolio showcasing your successful DevOps consulting projects to attract clients or job opportunities in the field of DevOps consulting.