1. Do a search, to make sure that you aren't creating a duplicate of an existing club.
If there isn't a club with that topic already, continue.
2. Go to the top page (click the Fanpop logo in the upper left)
3. Scroll down until you see the "create a club" link in the "Browse clubs" module (right column, near the bottom). Click "create a club".
4. Fill out the form. Submit it.
5. The club is created. Now click "edit club" to upload a logo and banner.
For more detail, refer to the Fanpop User's Guide:
link