I need banners for advertising in Facebook

Design details: Hi, we are an online classifieds startup (www.cbuddy.in) and we are looking for good quality and creative posters that we can use for digital marketing, especially for Facebook Ads.

This site is exclusively meant for Software Professionals.

The following are the unique selling points for cbuddy:
1. No brokers and agents. All posts are from genuine, verified software Professionals.
2. Easy to find a roommate who is also a software Professional.
3. Free (most of the sites are free, so this is not really a USP, but still)
4. In other websites, there are many spam Ads (posted by brokers). Here each ad is curated and a buyer can quickly find his requirement.
Target audience: Software Professionals
Banner sizes: Facebook standards
Banner content: Static Banners
Ideas for the visual style: Should be creative and effective
Website url: www.cbuddy.in
Website information: An exclusive Classifieds site for Corporate Professionals
Extra notes: