Maybe an asymetrical design in the header. This one's colors are far too bold but, in more subtle hues, I think this could be interesting and still clean/modern.
Buy Modern Infographic Options Banner by Andrew_Kras on GraphicRiver. Modern infographic option banner with white abstract round paper ribbons on grey background.
Square Cool Paint Trifold. Download here: http://graphicriver.net/item/square-cool-paint-trifold/12692656?ref=abradesign