If you'd like to create your own Alliance, follow these steps:
Go to the game's Home screen.
Tap ALLIANCE.
Tap Alliance Search.
Select Create Alliance.
Enter a name for your Alliance.
Choose whether your Alliance will be Public or Private.
Add a description for your Alliance.
Tap Create, then confirm your selection.
Once your Alliance is created, you'll automatically become its Leader.
Please note: Creating a new Alliance will automatically remove you from your current Alliance.