Pick one platform (Upwork or Fiverr) and one direct channel (your network, LinkedIn, or past clients). Build a profile around two or three strong case studies. Price so you know exactly what you keep after fees. Register with PSEB once money starts arriving. And never move a stranger's job off the platform before a contract exists.
This guide is about the freelancing itself. If you are still deciding whether freelancing is the right first step, read my guide on earning as a student. If your question is how the money reaches your bank, read how to get paid from abroad.
I ran my own studio, sxtudios, doing product design and brand work for early-stage clients. I believe products start with the problem, not the design, and freelance work is no different: clients pay for a solved problem.