We are a company and want to do six sigma project.We produce fasteners and we have data for for defective numbers,shift times, operator numbers and machine numbers and operation numbers of these defective productswe want to reduce amount of products

We are a company and want to do six sigma project.We produce fasteners and we have data for for defective numbers,shift times, operator numbers and machine numbers and operation numbers of these defective productswe want to reduce amount of products which don't go with go gage.Which way we can follow for our greenbelt six sigma project?How can we start to the project distinctly and simply?I would be pleased if you answer me urgently?Thanks for your concern......