a. Each individual determinant analyzed for your situation, with exs applicable to your situation and research showing current Demand data or most recent past data, except for the Expectations Determinant in which you need to use data estimating future market conditions.
b. Price Elasticity of Demand facing you in your scenario, including actual calculation of it using the midpoint formula. If you can't find data, then determine the Price Elasticity from the Characteristics and make up numbers to use. Be sure to identify this if you use this approach.
c. Graph the Demand facing your situation. Note that this requires information from the Supply Determinant analysis before deciding how to draw the curve(s), as you may need a separate MR curve.