Self-promotion is one difficult tedious task to do especially if you are just starting. First of all, a technical illustrator needs to create an online portfolio. You need to either make use of free websites and blog sites or buy your own domain and hosting. I would recommend buying your own domain for maybe $12 a year and hosting for about $7 a month. The professional image of your website is very important because it has the ability to enhance your images and improve your reputation highly as a technical illustrator.
In selecting a domain name, you need to go the Google External Keyword Tool and select the service you are trying to promote. This tool is free and you can see the search volume for a particular keyword. I recommend selecting the low or medium keywords. They have at least acceptable level of competition that you may find easier to join. Do not feel threatened with the level of competition. In this game, only those who have the patience to create plenty of backlinks could make it to the first page of the search engines search results. A technical illustrator needs to select keywords related to the service with low level of competition and ideal search volume of below 50,000.
After you bought the domain and the hosting, then you need to find a website template suited for a technical illustrator portfolio. The template should be professional and colors blend well with your design to make your design samples attractive.
Article marketing is the best that you can do to create backlinks and build the reputation of your services as technical illustrator. Write original articles and submit to several article submission sites. Although there are article submission sites that require payment, most of them are free. You can submit one article at a time. This slow but sure process is guaranteed you will be collecting backlinks and improving your authority on this particular niche. Having a website is one good way to focus on your search engine optimization. Have only one website to promote at a time. Promoting even one site will cost you time and money. You still need to devote time to what really makes money here – your work as a technical illustrator!