I guesss with "Club" you meant a party(thats what we have).You can make/join one buy clicking on the purple hat with a 'P' on the top-bar with the other small icons. Then you'll see what to do xD but creating a club costs some 2 million tu i think.....

You can change your avvie by going to 'Preferences'  on the left-side bar and then clicking 'forum options'.You have to first unlock the hidden avvies though