I really like the first. I think the light is too forward in the rest.
Thanks. I agree with the lighting.
I acutally like them all. Great job!
Thank you very much. Thanks for commenting. 
The lighting on these is really harsh. I think you should try balancing out natural light with your studio lighting (whatever you have) that will give you a better outcome with softer lighting. He is such a cutie though!!
Noted. It's really my first attempt at anything like this.
So, I gladly accept the advise. Thanks.
I love the first and the last shot. Very cute baby.
Thank you.
Very cute. The last one is my favorite. I agree that the lighting is a little too harsh, what is your setup?
You're probably going to laugh.
One 500watt shop/work light from the garage on the right.
One of those car windshield silver sunshades on the left to bounce on face.
Open east facing window as my frontal fill.
Yea. It was cheesy, but I'm learning.
Cute shots. Some sort of fill (flash, strobe or reflector) on the left side would have helped lighten the shadows. Great job on the focus with such shallow DOF.
+1 on the first and last being great shots.
Yes, I agree. Need to actually buy a reflector.
Thanks for the comments and crits. 