need advice

Do you also have experience in custom Wordpress theme development and Wordpress theme modification, aside from HTML and CSS? Also, do you have experience in graphics design, particularly designing logos, banners and other graphics? If so, the "value" of your services just went up several notches. You can further increase the "value" of your services by offering fast and constant communications, fast project completion quotes and reasonable prices. Now, you need to show the overall quality of your Wordpress, HTML, CSS and graphics design services by building a portfolio that you can post on your site...

For keyword research, I suggest targeting exact match long tail keywords with low competition, rather than competitive exact match keywords. You need to build your onsite and offsite content by initially targeting these long tail keywords, and once you have more than enough onsite and offsite content that could most likely make Google see your site as an authority in your niche, start building onsite and offsite content targeting competitive exact match keywords. Say you target 100 low competition exact match long tail keywords each having around 50 local monthly searches and 100 global monthly searches on average. That's collectively 5000 local monthly searches and 10000 global monthly searches...

For onsite SEO while building your site, use your target low competition, exact match long tail keywords...

Of course, your own site should look professional, uncluttered, elegant and visually appealing. Then, develop relevant content on your site offering benefits not found elsewhere, such as written guides and tutorials as well as brief video tutorials and guides about Wordpress, HTML, CSS and graphics design...

Develop a more extensive digital info product, such as a more detailed written guide or tutorial or a more detailed video guide or tutorial about Wordpress, HTML, CSS, graphics design and site maintenance. Include links pointing to your service offers in this product. Integrate your mailing list subscription process into the sales page on your site for this product, so buyers can opt-in as your mailing list subscribers. Post this product as an affiliate product in various affiliate networks. Post a 90% or more commission per sale percentage, to entice more people to become your affiliates and promote your product and site as well as populate your mailing list subscriber base with buyer traffic for you...

Go to Web forums where a lot of people who need Wordpress, HTML, CSS and graphics design services hang out, such as this one. Establish your reputation in those Web forums as a friendly, expert resource of beneficial info, advice, content, products and services relevant to Wordpress, HTML, CSS and graphics design. Link your forum sig to your site, sales pages and affiliate signup pages. Once you have a good, solid reputation in those Web forums, see if it has a marketplace where you can post your service offers and products for sale...

If you're in North America or you have a friend in North America who can handle the PPC advertising campaigns of your business for you as your business partner, then you can get $100 or more of free Google Adwords PPC credits and $50 or more of free Yahoo! PPC credits from hosting companies offering these free PPC credits with their $10/mo or so hosting plans. Otherwise, you can get Facebook coupon codes for new Facebook accounts that can give you up to $250 of free Facebook PPC credits. You can use these free PPC credits to promote your site, products, affiliate signup pages and service offers. You should also look into content syndication, solo email ads, guest authoring and private ad space arrangements...