I am happy to tell you how to do each step. As others have pointed out, these are only how to make a leader, co-leader, elder, etc. They do not guarantee the result of a good leader, co-leader, etc.
To become a leader (you must be alliance-less)
- Click alliance button at bottom of screen; follow prompts (and pay the gems required) to make your new alliance
- You will automatically be Leader until you leave the alliance or promote someone else to leader. (If you do not promote someone before leaving, your alliance will have no leader and can become stagnant as no new co-leaders will be able to be appointed. If you return, you will be a member, and must be promoted by someone else; only leaders can make someone else leader in an existing alliance.)
To make Elders
- Click Alliance button on bottom of your game screen. It should default to the [Members] tab.
- Click the member you wish to promote.
- Click the blue [Promote] button at the bottom one time.
To make Co-leaders
…
- Click the blue [Promote] button at the bottom two times.