Where can you suggest that I find quality web header artwork/images?
Here are some, I hope you will like it.
http://rockstartemplate.com/blog-resources/header-banner-design/ http://www.besttemplatedesign.com/header/c-72/food.aspx
http://rockstartemplate.com/blog-resources/header-background/blog-header-design-background-banner/
http://www.smashingmagazine.com/2008/03/05/blog-headers-for-free-download/
http://www.freewebpageheaders.com/gallery/
If you know how to work with a graphic editor you may use any image which fits your idea.
I use images from this gallery (non-free) - Stock Photos & Vector Art : Bigstock⢠- Royalty Free Stock Photography