Well, you don’t. Not because you can’t but because it’s too expensive and too slow for you to do it by yourself.
The best way to spread the word about your personal brand is by creating something your audience will enjoy enough to share.
Unfortunately, you don’t get to decide if the thing you create is remarkable; your audience does. Your job as a creator is to create. If your audience remarks on it, then it’s remarkable.
If they remark on it, the word spreads.
Creating a remarkable piece of work takes effort and intention from the creator. It gives your work the best chance to stand out.
Something to note; when people talk about you, they’re essentially talking about themselves. They are spreading the word about your work because it makes them look good.