Ok, you need to do couple of things:
1- NOC from your employer addressing the ministry of interior
2- certificate of salary no less then QR7000. (used to be QR4500)
3- Bank statement of salary for at least 6 months
4- a copy of your reisdence electricy bill
5- a copy of your accommodation bill
6- Marriage certificate
- a copy of the passport of the mother.

Good luck & Bonne chance,

Cheers!