Add a homemade image to theme header.

Hello everyone,

My site is http://randythetechprofessor.com. As you can see I’m using the free theme xMark from Lisa Sabin-Wilson. My version is 2.8.5.

Up in the header (left side) where the “X” is, I would like to insert my own custom made image (and “brand” my site). I will also need to move my lettering (Randy The Tech Professor) to the right in order to get the letters outside of the circle (where my new image will be).

1) How do I do this?
2) If I do this will it affect SEO in any way?

Thanks for any help you can give,

Randy The Tech Professor