I think more thought about the angle of the light was in order, or the use of some fill lighting.
I globally capture sharpened in ACR and increased the Clarity slider.
In Photoshop:
I cropped a little off the right side of the image.
I have added exposure to the baby by selecting (Quick Select Tool) the baby (saved selection), making a new layer with the selection active (CTRL-J), changing the blending mode of the new layer to Screen, and reducing the layer Opacity to 25%.
I retrieved the baby selection but checked the Invert option so everything except the baby was selected. With that selection active I added a neutral density gradient from the top of the image to the babies knees.
I then selectively sharpened the babies face, hat, fingers, neck are, using the Sharpening Tool set to 65%, Protect Details.
I then used the Polygonal Lasso Tool to select the eye whites and iris. With that selection active I made an Exposure Adjustment Layer and increased the exposure 0.25 EV.
I then used the Polygonal Lasso Tool to select the babies lips. With that selection active I made a Color Balance Adjustment Layer, subtracted some Magenta, and added some Red.
I flattened all the layers, duplicated the Background Layer (Ctrl-J) and clicked on Filter > Topaz Adjust.
I used Topaz Adjust's Photo Pop preset on that new layer and faded the preset to 25%.
Lastly I added a thin black border (Image > Canvas Size)