Changing Default Picture in Header Bar

[bmzooka14]

So I'm pretty new to html, so please try to bare with me. I download the cutline theme to my website, and it has been working great so far. My question is how do I change the default header of the picture of the ally way / tree, to a picture of my own?

[sofimi]

Please search this forum section first, there have been a few discussions on this already:

http://performancing.com/forums/show...3596#post13596

http://cutline.tubetorial.com/using-...ne-version-13/