Are you really good at SEO? Perhaps you are the person to review my website and present a detailed and comprehensive chronological plan to optimize the site for on-page and off-page SEO. A plan that I, or possibly you, can follow to bring up my ranking and exposure.
If you are thinking "I will run his site through my software (Web CEO, SEOSuite, etc.) and give him a pdf report from it.", don't bother bidding. I have multiple versions of the same software and can do that myself.
You can start there but I don't want only software looking at my site, I want eyes looking at it. I want a mind thinking about it. I want a brain analyzing the site and devising the strategy. Organic intelligence, not artificial intelligence.
Please, in your bid, include a list of the factors you will consider in your evaluation and strategy. Meta tags, back links, blog, etc.