Kid photography

I am doing my first shoot for money in my studio this evening at 7pm and I had some posing questions.

I am going to be taking pictures of 2 girls ages two and four. Can anyone help me up with some posing ideas? I am quite nervous about the whole deal. I plan on calling their mom today to confirm and do a short consultation.

Any other tips will help too.

I just did some about 3 hours back -at home.
http://www.photography​-on-the.net …/showthread.php​?p=2328332

You might think of having them play around, and photograph them while they're having fun. Getting young kids to sit still for a long time can often be an effort in futility
Ask the mum to bring some toys or something, and depending on what sort of shots she wants, you could probably take photos with the girls playing with them.

Just some ideas - I'm by no means experienced in this