Welcome to the site Mamoon. I moved your post into its own new thread to get a bit more attention and hopefully more help for you.
Anyway, Neil's suggestion is good. I'd also look through our 100+ hypermiling tips on the site here (link up top). There is a lot that you may want to use, and a lot you don't want to use. Find what works for you and I'm sure you'll see better mileage.