Analyse my website, improve my conversion rate

I need to improve my conversion rate on my website. I need more visitors to buy my software. What experience do you have when it comes to this part? What is the procedure for improving my conversion rate? You need to test headlines, colors, pictures, text, font, sales letter design of the site etc to make sure I get a better conversion rate. Right now only 0.2-0.4 of all the visitors buy my software. I want this number up to atleast 1-2% I want good references from you **References for improving conversion rates job.** 1. The company you improved conversion rates for 2. How many percent better conversion rate they got after the changes. * What is the procedure for improving conversion rate. What are the exact variables and factors you change? * How long time will it take? * What is the price? * Do you know about this site <[login to view URL]> ? Do you take knowledge from there?