The only thing I can see, is that the grass is really really green in the background and takes a bit away from the popping colours you have going in the pinwheels. This could have happened when you did a hue/sat layer.
If you are using Photoshop CS, when you do the layer, it will automatically make a layer mask. Click on the mask (the white box on the right in your layers box) and paint it over with a soft black brush.
OR, you can use the history brush. Set it to the step before the layer by clicking in the box next to that step in the history box and then just paint it over until you are happy.
OR, use the sponge tool set to desaturate and a low flow (around 10%) and paint it over with that until you are happy :)
Good.. I was hoping to see some windmills for kids! :) To see 8 in one image is too delightful. I like the way 2 are still, and the others are swirling away! Darling child, pretty colors and nice tones.