Financial economics and International Monetary Economics students should take a look at these examples of policy briefs/country comments:
Next students asked about the implied reader of this country report. Your implied reader is an interested and educated classmate, so assume some familiarity with material--the definition of GDP, say---but not overly technical terms or regional nomenclature (eg. every UK newspaper has to identify Taoiseach as Primeminister).
In terms of models, you can use any model you like to understand the data you are explaining, or none, it is totally up to you.