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Cute pics with some nice expressions.
If you are doing any post-processing on these with something like Lightroom, instead of boosting contrast to the entire image, try just giving the child a contrast boost with a local adjustment brush. The backgrounds compete with the child a little bit on these due to the high contrast across the image.
You may have them and just didn't post them but don't be afraid to get a close, face-shoot for a nice expression and better view of the eyes. A combination of environmental and close-up shots makes a nice mix of context and expression.