Before you get started on your writing career, first ask yourself if you are ready for it. Though satisfaction is high, pay is quite low, especially in the beginning. You would need your passion for writing and perseverance in your character to have a good writing career.
Having said that, start with identifying the level of your writing skill - get onto Google Search, or sign up on freelancing websites to see the type of available jobs in content writing. Check if you can deliver on such jobs. If yes, go to next step. Otherwise, train yourself to gain the confidence to deliver such jobs.
If you are sure you can manage writing projects, set up your LinkedIn profile, talk with your network, and sign up on freelancing websites (and bid on projects) to spread the word that you are in business.
Use polite and proper English language in your written communication to deal with leads and clients. Deliver on Custom Dissertation Help UK
time. And demonstrate genuine interest in your projects to ensure the clients that their projects are in good hands.
Good luck :)