There are some general good practices to follow when building a new software application. Below provides a good outline of steps when following an Object-Oriented methodolgy when performing the Analysis and Design during Iterative development.

Following the Unified Process (UP)

1. Inception (Artifacts (any work product) are Optional)
   A short phase to develop and analze the vision/business case, Use-Case (Some) & Models, Supplementary Specification, Glossary, Risk Management, Iteration Planning,  Proof of concepts, Scope, Estimations, Development Case.
2. Elaboration Phase (Multi-iteration)
   Most requirements analysis should occure in the Elaboration phase. Refining vision, core architecture, resolution of risk, identify most requirements & Use Case, realistic estimates, Domain Models, SSD, Interaction Diagram, Class Diagram, TDD,
3. Construction
   Full iterative implementation, preperation for deployment
4. Transition
   Testing and Deployment

Following the Unified Process Disiplines

1. Business Modeling
   Visual and noteworthy concepts in the application domain.
2. Requirements
   Use-Case and Models,Specification artifacts showing functional and non-functional requirements.
3. Design
   Design Model Artifacts, for architectual objects, UI
4. Implementation
5. Test
6. Deployment
7. Configuration & Change Management
8. Project Management
   Agile, Scrum
9. Environment
10. Business Modeling
    Agile Modeling
11. Requirements
12. Design
    Agile Modeling
13. Implementation
    Test-Driven Develoment TDD, Continuous integration, Coding Standards