Even if you know your subject inside and out, you may still want to look for your fellow Wikians for advice on how to develop a successful wiki. Below are some useful wiki development tips that will help you...
New wikis come with a basic main page which allows you to quickly fill in information. Of course you don't need to use this default - you can also design your own original main page, or copy and customize a design from another Wikia. Be sure to add descriptive text, great images, and links to your most important articles.
Consider creating an "About" page for your new wiki, and adding a mission statement.
This is your vision of what the wiki will be, and should explain to people what they can expect to find on the wiki. You should list the aims and goals of the wiki on this page, and explain who your target audience is. Also take a moment to explain to people how they can become part of the wiki.
You will need to start the content creation on your wiki by "seed posting" -- adding stub pages and starter content to help flesh out the organization of the wiki, which others can add to. Be prepared to devote a lot of time to this in the early days before a community develops on your wiki; you may create a hundred or more articles yourself before you begin to attract other editors.
You may copy or import material from other wikis who share our CC-BY-SA copyright license, such as Wikipedia, Wikiquote, and more. Please be sure to properly credit the source of the material.
Strive to stay on topic to your wiki. Every page should relate to your wiki's focus.
Admins can use the Theme designer to choose from a variety of preset "themes" which combine background colors and images with complementary link and text colors. It also provides tools for specific theme changes including an overall background color and image, button color changes, link color changes, text color changes, header color changes and page body content color changes. Lastly, it provides a way to make a quick text "wordmark" logo or a way to upload a custom image version.
Consider other interface changes
Change the favicon
A favicon or favorites icon, can be uploaded to Wikia to give a personalized icon associated with your Wikia. These will be shown in the browser's address bar, next to the site's name in lists of bookmarks, and, in tabbed browsers, next to the page's title. You can find the favicon upload tool in Theme Designer.
If you want to develop a community, you will need to tell people about your wiki. Explain to people who may be interested in the topic area that the wiki is a common effort. Be welcoming to visitors and encourage them to become part of the wiki.
You may want to advertise for new users on relevant mailing lists, and through your own contacts. However, be careful that your messages do not come across as spam.
For wikis about local areas, you can make a press release, or send a notice about the wiki, to your local newspapers and residents groups.
To promote your wiki within Wikia, propose it for a Spotlight and add it to relevant hubs.
At some point, you will need rules for your wiki. Keep these simple at first, and expand as you need them. For example, there is little point trying to create rules against edit wars before anyone gets into an edit war. The rules should grow with the wiki, and be developed by the community over time. Applying too many policies is a common mistake.