State your accomplishments! Tell people what you have achieved from the start.
Be clear about what you are doing and how you plan to do this.
You have a global audience! Consider the different backgrounds that your users come from.
Make sure information is easy to find; nothing should be more than 3 clicks away.
Avoid using very small fonts and low contrast colors; information should be easy to read.
Start documenting your project as early as possible; don’t leave anything to the last minute before the Wiki Freeze. For a complete list of deadlines visit the iGEM 2018 calendar
Have lots of fun!

You can also view other team wikis for inspiration! Here are some examples:

Team:Bielefeld-CeBiTec

Welcome to iGEM Bielefeld-CeBiTec 2018!