Most importantly have a passion for programming, a passion I love to share with others. But if that isn't enough I also have more than one qualification:
I have an MSc in Computer Science, with Distinction (as well as a BSc in CS). I am a full-time software developer for an international gaming company. I have several years of experience helping others solve their programming problems (including fellow students and co-workers, as a live tutor at University, and an online tutor at https://instaedu.com/tutors/online-tutors/Matthew-F-05446/).
I also have many satisfied customers whom I've developed both C# and Python for on Fiverr: