These days a lot of people are earning a larger portion of their income, if not all of it, from sources that do not have anything to do with some kind of a stable job that they would potentially be responsible for. Rather, people are moving towards something that is being referred to as the gig economy, and this basically involves jobs that are temporary in nature and are of a more contractual basis rather than anything concrete that would be long term and would pay you the same amount of money.
If you go for a job that is freelance rather than tying yourself down then you can earn a lot more money, but you should also consider things like stabilizing yourself by getting a core group of clients from whom you would keep getting a lot of support as well as a steady supply of work that would form the basis of your income with all of the other clients being the kinds of people that you can rely on for extra income whenever they have any extra tasks that you could perform for them.
The key here is to get your name out there, and the best way to do this would be to contact Metal Kards and get business cards made. You can list down what you do on your cards and then hand them over to people that might be looking for someone in your field. Eventually you would have given the cards out to so many people that someone or the other is likely to give you a call. It takes time to form a regular client base but the effort pays off in the end with a high income.