Just saying, Rebekah always posts really great newborn images.. so you might have a thing or two to learn from the CC she is offering you.
I don't need to. You know what photography is? ART. Every photographer is different and has their own style. Why do you think people hire people? Based on their style and work.
Im going to give you both sides here, because I think there are valid points in both.
first, don't discount C&C so quickly just because it is adverse to your feelings on the picture. It is much easier to claim "artistic license" on a photo that may not be working for most people than it is to humbly accept critique and move on. you posted on a critique forum, so take what you get gracefully, use what feedback you feel is worth using, and take the rest in stride.
secondly, often times people will discount non-traditional portrait styles as "poor composition". Personally, I think this is because we have been extremely acclimated to seeing the same style pictures over and over the internet and they have become "the norm". (mostly for baby pictures and portraits) never be afraid to branch out and try new things. If you are pleased with a photo, then that's all that matters. I think something besides the same old overdone FB baby poses is actually refreshing, as there seems to be little to no innovation on the baby photo front. I think the tighter crop on this picture is nicely done. a little tweaking on the B&W may be needed, but im not a fan of B&W to begin with so, someone else is probably better suited for that part.
overall: a nice shot, especially with the tighter crop. the baby looks well placed, and quite comfortable.
my only composition nitpick might be that its a HAIR too much of an overhead shot. I might have come down just a LITTLE more. not much though.
as far as other C&C goes, it looks like this was shot at f/1.8 ish? looks like a shallow DOF to me. this seems to be very common with baby photos.
personally, i would stop the lens down a bit and get the baby's shoulder, upper arm, back of the head, and rest of the blanket in focus.