Personal branding has become much more important in recent years. While word of mouth still works wonders (and may have even got you this far), you'd be surprised how much work can be found through portraying yourself as a knowledgeable and trustworthy creative face in your sector. You don't have to look far to find the experts.
It's not difficult to put together your own web presence and curate your social media accounts. A little consistency and quality control goes a long way. While it's easy to, say, double-check your spelling, only post up nice images and link to popular articles, that way of thinking can only get you so far. After all, many of the most popular accounts ignore quality, spelling and grammar. Your presence online should reflect the person you're selling to new clients. If that character posts up articles about how to run a small business, they'll see you're entrepreneurial. If you post up tutorials for food styling, people will know you're informed about that chosen field.
When working in the creative industries, you have the option of trading under your own name, or a brand names. Different people lean different ways, depending on their sector, skill set and even level of personal confidence.
Community sites like the Creative Skillset-supported Hiive can give you a great way to get started with an online portfolio for free, with the added bonus of a connected network of users, something a personal website can't offer. If you're just testing the waters of self-marketing, sites like Hiive can be a great place to start.