What about running a competition calling all new mums with babies born between certain dates. Every new mum thinks their little angel is a beauty even if they do look like ET.
The winner will receive a free 10 x 8 print. It'll be great as you'll get loads of new mums through your door and once they see their baby's photo they won't be able to resist buying.
I remember when I was in hospital a photographer came in once or twice a week and set up a portable studio of all the newborns. The mums just wheeled their bubba down in their cribs and placed them onto the mat and the photographer just shot away. The photos are a touch "walmart" but a great keepsake. Maybe you could do a similar thing. Obviously your skills and experience would create something special and nothing like Walmart!
Just a few more ideas!