Adding Plugin To Header Image

Hello,

I would like some help putting up a widget on top of my header image.

I am using the twentyeleven child theme. I am a beginner in php and html and would really appreciate some step by step help. I am looking to create something like this, where there is a quote type box on top of the image: http://www.lifeinsure.com/

I am locally making my website so I don’t have a link to the site itself but I do have a picture of what it looks like so far.

http://postimg.org/image/b7ppud933/

I want to move the Free Estimate Form to be on top of the header image.

Any help would really be appreciated.

Thanks.