Well, if you wanted to fix the text, I would try something that's a little less jarring than green. I also don't think serif fonts are the best choice for this banner--my suggestion is to use something simple like Helvetica, Arial, or Century Gothic at a large size and to make it pop by setting the color to white (or gray or off-white). Then just playing around with the opacity and drop shadows could make the banner look better. If you really want the text to be green, then you should try out a few other different shades and take out the texture overlay.
My other recomendation is to distribute the colors in the background images a bit better. Since the rightmost part of the banner lacks the bright color of the left side, the banner feels unbalanced. If you moved the images around so that you have a bit of color on both sides of the banner, it would look much better.
Hope my suggestions help!