Neat idea. :) Fun baby shower gifts indeed. Make sure you go on mother's blogs and get the word out. I agree with previous poster the white of the onsies look yellow and it is distracting. Also I am confused about the sunglasses picture in all the items photos, what is it for? Lastly the glass items you are using for a stand are distracting.
I suggest natural light, adjust your white balance to auto or if you see a yellow or blue cast on your photos you may try sun or shade. Use a stand you cannot see.
Hope that helps :)