Get Traffic to my Website

I need someone to improve the SEO on a few websites that I have. They already receive a ton of traffic. But i want to get away from purchasing traffic from search engines and I want to be able to get some Organic traffic. I only want white hat methods. I need someone to give me a schedule of what they will do and how long it will take. I have various sites we can work with. I will need some examples and proof of the SEO you have done on some websites in the past. This is a long term gig, if you do well I do not mind paying weekly. But I need to see results.