Help Diagram in Visual Basic

may project po kami,,ang ginagawa naming system is yung Financial Management System for Farming OPerations,,meaning,,compute nya lahat ng expenses na inputs,compute din nya yung income..and then pag nakaharvest na,,magpoproduce xa dapat ng diagram bout sa percentage ng income nya,para pag next harvest ulit madali nyang icompare yung income nya through the diagram produced..problema namin yung diagram ngayun,,di namin alam kung panu gumawa,,pahelp po naman