I take at least one space heater to a newborn photo shoot.
Does your camera show a histogram? Don't look at the LCD screen. Use the histogram and the blinking lights that are in the photo next to the histogram. I try to expose as much as possible for the skin tone, provided there isn't any white in the photo. If there is white, I give as much exposure as possible without blowing it out. Then, I lighten the photo in photoshop. As everyone already said, the photos are too dark. And, the editing isn't good....sorry. Have you tried actions by Florabella? They are amazing! Before Florabella, I wasn't that great at editing.
The third photo has too much light on the left side of the baby and not on the face. You could either reposition the baby to face the light or you could use a reflector panel to fill in the dark areas. But, I always face the baby's face toward the light.
Also, wear gloves to a newborn shoot so your cold hands don't wake the baby.
I would recommend not using the gaussian blur to remove veins. Clone stamp them out, then use a plug in for photoshop called Portraiture. Costs $200 and it is amazing! Use it ONLY on the skin, not the hair, eyes or clothes.
I like the first shot, except for the exposure, and try to get the whole arm in the shot. I love that the baby's eyes are open. So sweet.
I love the composition on the second shot.
The last one is nice too.
If you want to check out my work using florabella actions and Portraiture, go to
www.sweetpeaphotodesign.com and go to my gallery called "babes and bumps".
And, lastly, I think you have an eye for baby photography. Just keep practicing!