Is your baby not only beautiful but talented as well? Is there something about you and your baby that sets you apart from the other children? If there is some serious baby talent then you should use that to your advantage as well. In this industry there 
are thousands of babies and children that are pretty much the same. Blue eyes, blonde hair and a cheeky grin can be a great asset for some, but it also puts you in one of the largest demographics of baby models. So in order to ensure YOU are getting the work that you want then you should try to differentiate yourself from the competition. One of the ways to do this is to highlight any skills that your child has that may be useful to the photographer.
As your child is obviously quite young these skills can be anything from crawling to speaking and everything in between. It may just be that they want a very small but advanced child and you can offer that. So pay attention and market whatever you can!