Make sure you have good quality marketing material. Don't scrimp on this area of your promotion. Presentation is the one of the keys to generating money from your creative abilities. Striking images and good identifiable design is important for your business cards, postcards stationary, invoices and website (if appropriate). Do not make your own business cards. Get them professionally printed.
If you can afford to, join the Federation of Small Business (tel: 01253 336 000). It costs £100 for the first year and £70 thereafter. This organisation offers a range of complimentary services including 24 hour legal and tax advice, legal cover and good value deals on insurance.
Keep learning about self-employment, purchase a few books from the Useful Publications section. Go to business conferences, attend seminars and courses on professional development and enterprise training that are featured through the Artquest site and AN websites. It is good practice to keep updated with developments and meet with your contemporaries.
You may decide it is appropriate to build a website with pages showing images of your work and use it to develop interest in your creative practice and services. Make links to showcasing sites and invest time in promoting it.