The color seems a bit flat, as does the expression which overall creates lackluster. More direct light and perhaps engaging the baby would create images that leave a lasting impression. Furthermore consider your subject's placement, two of the photos leave her dead center, trying adding the rule of thirds for even more interest.
Look cute, focus looks a tiny bit off but not too bad. They are definitely unexposed though. I just did a simple screen layer and then enhanced the eyes a little. It helped a lot. Here's an example:
