You have to make a very professional-looking website with a VERY GOOD portfolio (so do spend time on it, don't rush things), include a short bio, etc. Then manual outreach or advertise somewhere. Look up the 'for hire' subreddit. Before that however, make an account on upwork - not to work there (you'll be absolutely shocked at the amount of pages and pages of competitors lists, also even professions you wouldn't think are saturated, like 'expert on sales funnels' are so saturated, that they will reject your application just on that basis, but you can still browse listings without an approved account tho), but to browse the posted jobs and see what's in demand.
You only need to find one company that feels you are a great match for them in order to get hundreds of hours of paid work. Relevance always trumps skills and experience, so do look up what's in demand before you start - if you specialize in modelling furniture, and there's a company that looks for furniture modellers, you're in and everyone else even people with higher skills are out. In other words, niche down & specialize in what's in demand.