How to make a business case analysis?

Business case analysis is providing the details and due diligence needed for senior management to make decisions on corporate projects of significant importance. Basically you need to come up with all the reasons for moving forward with a project by identifying and quantifying potential benefits. In addition you will need to perform an evaluation of risks and also a cost/benefit analysis. I personally have taken some project management classes, they would help you as well. Search out project management professional classes for more information. Good luck!