Stay at home mom

Erin • Mama to 3 beautiful girls
We have a 4 year old daughter now. And our second daughter is due in September. I am working now as a hairstylist, but I am dreading going back to work after the baby is born. I asked my husband if I could be a stay at home mom for at least a year. I'm more worried about the well being of my baby. And he is worried about finances. 
Any advice or suggestions to help me bring in some extra money if I stay home? 
I've thought about doing hair at home  but there are laws against it in my state