A lot of website owners like to use cartoons on their websites whether it’s a comic strip, to accompany a news article or to illustrate a point. If you are skilled in drawing this is definitely a business you can get into.
Once you have mastered a drawing style and built up a portfolio (start drawing for free if you have to). Then, you can start listing on cartoon related websites or start contacting website owners if you see your cartoons is a good fit for their website. You can also start out on a website such as fiverr to get a feel for the work before moving up.
Find a niche
If you can design caricatures for example you can do that for authors on a website.