UML project

I have these tasks 1) Use Cases: A. Draw a use case diagram that contains every use case and user you can identify. B. Provide a fully developed use case description for the use case ‘Add/Register a seller’ showing the actors, related use cases if any, pre and post conditions as well as exceptions. C. Provide an activity diagram showing the steps needed to complete the use case ‘Add/Register a seller’. 2) Domain Modeling: A. Draw a Domain Model Class Diagram showing classes with attributes and multiplicity as well as any type of relationship (association, whole-part, and generalization/specialization) as appropriate. 3) System Sequence Diagrams and State machine Diagrams: a) Draw a detailed System Sequence Diagram for the ‘Purchase Book’ use case. b) Draw a State machine Diagram that shows the states of a Book object from the initiation to the end.(minimum 3 states) 4) User Interface Design: a) Create a dialog design and a storyboard for any use case of your choosing. You can use the use case ‘Add/Register a seller’ or any other one you prefer. This should look like the one in chapter 7 (slide 21 and 22). You should include at least 4 screens.