Freelance copywriters create written content for clients. As a freelance copywriter, your primary responsibilities are understanding what your clients need and creating content to fulfill those needs. You often write for clients interested in content marketing, so your writing projects include articles, blog posts, social media copy, email marketing campaigns, case studies, and whitepapers. Other job duties include marketing your copywriting services, negotiating rates and contracts, writing and revising content, and submitting work to your clients. Freelance copywriters are self-employed and work on a contract basis.