Not at the moment. Little wrapped up with a couple things. It should be pretty straight forward (I hope). Just click the domain you want and hit go. It handles the set up and renewals for you automatically.
Potential exploit which would affect the trust of these certs:
A note about cloudflare's SSL option above. This only encrypts data between cloudflare and the end user. The data transferred from the host to cloudflare is unencrypted. You must have a SSL certificate set up for your website to ensure that you have end to end encryption (host to cloudflare and cloudflare to end user).
You could, in theory, use lets encrypt and cloudflare (both free versions) for full end to end encryption. This is great for the masses. If I'm running a business, however, I might buy a certificate from a trusted source. The issuer of my certificates has some integrity associated with it.