Thanks for all the comments, so far it has given me some ideas and things to consider.

Since taking on the 2 girls I have had 3 interviews (it would have been more but some did not show up...so frustrating!) and for each one they express concern that I do not have children the other days of the week and mostly all parent's ask what the girls scheduled days are. I've been considering going with an agency but haven't fully decided yet.

I know I just need to be patient! I do have experience with caring for children, I worked as a daycare assistant for 3 years but the main provider closed her operation so I decided to open a daycare in my home. I have references from that operation and have the girls parent's as well ,they were perfectly happy to give me a reference. It seems to only boil down to not having other children. I spoke with a woman yesterday ( follow-up after an interview) and she declined because I do not have other children for her sons to play with for the rest of the week (4 months old and 2 years old), even though I have a very busy park right across the street with tons of children. She told me that they have decided to go with a nanny instead.

I have been going to the park with the girls when they are with me and just today I was speaking with another provider ( I have spoken with her for a few weeks now). Her daycare is full and she asked for my phone number and information that she could pass on to parent's if they are looking! So I have made some progress!