I m not a mommy, but that s definitely a good way to make extra money. Make sure you properly report your daycare income on your taxes.
There are websites that offer online jobs, try searching it up. It s really suitable for mommies like you. But if you like the idea of offering home child care, i guess it will be difficult for you if you also have a newborn that you have to keep an eye always. If you want more information about these kinds of things, try this site I found: http://www.PlanAFamily.com. It s a nice looking site, with good information for mothers.