The trap that many creatives fall in to when marketing themselves is not differentiating themselves.
Saying "Hello, my name is Chris, and I make beautiful websites" doesn't help to sell anything. A tagline like that is only slightly more productive than writing "Welcome to my website!" like it's 1998 again and we're on Geocities. And saying you make "beautiful" anything is like a restaurant saying "Hi, we're McDonald's and we make good cheeseburgers." Yes, it's factually true, but it's also incredibly generic. There's no one claiming they make a bad product in their tagline. It'd be better to say what you make for who you make it and why you make it. For example, "I make mobile websites for non-profits that increase donations." The critical difference is that it's no longer about the creative, it's about the client.