There is a perfect pair of exercises in the Progymnasmata syllabus I use in my own practice as a teacher that would help you shape and craft this piece of writing.
The exercises focus on either giving a speech of praise (the Encomium task) or a speech of blame (the Invective task).
The exercises both follow the same structure and generally have eight sections which go from the general to the specific and relate the character's achievements to the listeners' lives in general.
The sections are:
- What’s great about them being born a human being?
- What kind of background did they have?
- What natural gifts did they have?
- What name might they be worthy of?
- What qualities did they have that drove them to excellence?
- What did they DO?
- How did people react? What did people make of all this?
- What can we learn from them? How can they influence us?
The originals are period-specific, so references to omens and auguries would not have as much relevance today as they would have in Classical times, but it's easy to adapt - and you appreciate much more about the way in which Classical civilisation was more connected with the natural world in which it existed than post-Industrial society arguably is by doing so.
In my own practice, I encourage students to explore the difference in effect when the speech is given in the form of a direct address in the second person to the character, or in the form of a speech delivered to an audience about the character, referring to the character in the third person - an interesting exercise, particularly when an Invective speech written in the third person is flipped and given in the first person to the writer.
Work with the exercises creatively, and you'll find these are powerful exercises and teach far more about what it means to be a fully engaged member of society than many modern writing exercises or prompts.
Further information on the Progymnasmata syllabus generally and these exercises specifically can be found in:
Kennedy, G. A. (2003). Progymnasmata: Greek textbooks of prose composition and rhetoric. Atlanta, GA: Society of Biblical Literature.