Creating your own clan is easy! First, open the Clans section of the game from the main menu screen.
Then, tap on "Create a Clan." You'll now see the window where you can create your Clan.
Tap on the section "Clan Name" to type the name you want for your Clan. Choose carefully, because this name cannot be changed later. Tap on "Clan Description" to write a quick description of your Clan. To the left of both of these sections, you can tap to pick a badge for your Clan.
On the right side, you can pick a location for your Clan. Please note that you can not change the location after creating the clan, so choose carefully! Lastly, you can also pick the clan type. An "open" clan means anyone can join, while if your clan is "closed", potential members can send requests to join that must be approved by you or your co-leaders before they can join.
After you've chosen all your options, all you have to do is tap Create! The cost to create a Clan is 350 gems.