MailChimp Add Text for Promos

Hi,

I have the MailChimp widget up and running, but I’m wondering how I can add a second level of text under the current “title” (“Get blog posts via email”)

Ultimately I would like a header to say something like “Looking to jumpstart your life?” and subtext to say “Subscribe to my blog and I’ll email you the top 5 resources that inspired me this year.”

Is there a way to do this?

My website: http://www.shannongianotti.com