This is a good summary of the necessary steps for winning SEO projects (especially when you are trying to outbid your competitors): http://freelancergeek.blogspot.com/
Most professionals know that, but you would be surprised how many SEO freelancers greatly reduce their chances by missing some of these simple steps.
well these are the basic thing or better to say stepping stone for bidding any SEO project. Anyways thanks because you cared about freelancers..