How to add content in header below navigation

Hi,

I am moving this website from a theme that is not responsive to Virtue. I am trying to add a couple of things to either the top bar or just below the navigation (but still in the header).
One is Facebook Likebox, and the other is a custom button ‘Request Style Advice’ (both can be seen on the existing site here).

I am working through the new theme changes to Virtue here

Could you please advise the best place to put these, and how to do so?

Thanks!