I agree with Dainty Chain.. it's a bit stretched too.
what about putting the daisy photo more to the left and the font in the white space on the right by itself? would alleviate your stretched issue and still look clean and sharp.
Can help if needed, but it's a pretty easy fix thru Gimp!
Banner width is 760 pixels, so maybe the daisy could be resized to 550 or 600 pixels wide and see how that looks?