Set up a WHM cPanel account on Digitalocean - Extended Walkthrough. 

Includes setting up a digitalocean server, creating a SSH key, domain setup on cloudflare, setup of domain for WHM, and WHM security addons. Commands, and time stamps in the comments. Note: If you tried to set up an account using the Digitalocean marketplace and it failed due to an SQL error, this should work for you as it includes a workaround for that issue.