All the themes that have a place for a main picture up top, require that you either use the pic that came with the theme (yeah right), remove the pic altogether or use your own....but our own pics arent usually those dimensions or even close. And cropping them doesnt work out well either. Why dont you make a theme header so that the top portion can be cut in half so that the blog name/title is on the left and the picture(s) are on the right? Either that or let us move a dividing line so we can alter the space.
The blog I need help with is thusspokejon.wordpress.com.