Bussiness Analysis ( Visual process maping)

I have created a process map for my Online marketplace website via Windows Visio. I need a capable bussiness analyst to take my work and enhance the process and bussiness requirements. I am not an expert bussiness analyst, so I need someone to make sure that my process is complete and makes total sense before I present it to the web developer. As you know bussiness analysis and process mapping is the most important stage in any website project.