Do good work. Over, and over, and over (referrals). Know your worth. Be increasing your rates ever 6-12 months based on how much learning you've accomplished.

Do good work. Over, and over, and over (referrals). Know your worth. Be increasing your rates ever 6-12 months based on how much learning you've accomplished. You're a consultant, not a freelancer. You want to be paid for your deep expertise and experience, not just your ability execute code/pixels/words etc.