I would suggest using either a faster shutter speed or a tripod to help get a sharper image. And does that striped tail belong to the white cat? Or is there a fourth cat hiding somewhere?
Lovely colors and positions; needs better focus, even though a soft focus can enhance a dreamy effect. Also, closer crop to eliminate stained(?) wall would help.
you should concentrate on the focus of your shots. This is a nice idea for a photo, but taking a little more time to choose your angle and and making sure not to move when shooting will help you to get a 'clean' and interesting image. Keep at it.
I think the composition in this picture is okay, but it is really hard to look at because it isn't very sharp. It seems like the picture is out of focus, try fixing this with a lens sharpen. I think it follows the theme well, and rather than just showing an animal, it actually shows animals doing what they do.
Hmm, they seem a little too old to still be nursing from mamma :P. Adorable pose. I like the muted color scheme here; everything seems to match -- kitties, background, mat, etc. Sometimes, using the Unsharp Mask tool in Photoshop will help cut down on blur.