How to Solve a problem given by Client or User

these are follwoing Structure which help you Provide a efficient way to Solve Problem:-
1>Design or Make a Problem Understanding Document on the behalf of your understanding (What you understand).
2>Send or confirm it from Client or user that approval .
3>Try to make their UML or Use Case Diagram of the Approval Document.
4>Devide the whole problem in Baby step or small worked.
5>Solve or Complete it untill it will not solved ,dont start any new model..(Remember)
6>Test it first and then go for the New Model
7>Review by someone else
8>Proposed it to your Team Manager.