I'm stuck with a design and I need help I can pay the helper $10 through paypal.

I basically have a site done but need to change the thumbnails so that when someone hovers over the image the background will change.

You can see what I'm looking for at Kate Mell - Enthusiastic and extremely passionate about flowers | Wetherby Flowers | North Yorkshire Florist | Wedding Flowers

my site is Sharpes Of Wollaton

Please help if you can