I like the image search although when you highlight over it and it asks you if you want to see similar images and you click through it has the same feature on the new images (how many similar images do you want to see). Would this not end up in going around in circles trying to find the right image maybe a more targeted way of defining the image without asking the user to do too much is needed? The size, colour, photo options at the bottom left are good for defining your image although its a shame they're positioned out of the way and not up the top. Too much clutter, too many features, google simple