1. Choose two theories: One from the text or modules (like the Calgary Family Health model, systems theory, etc.), and another one not previously discussed. You can find additional family theory models in academic literature.

2. Describe both theories: Explain what each theory is about, its main concepts, and its application.

3. Explain your choice: Discuss why you chose these particular theories. This could be based on their relevance to your case, their comprehensiveness, or any other reason that you find compelling.

4. Compare and contrast: Highlight the similarities and differences between the two theories. This could be in terms of their concepts, their approach to family dynamics, their strengths, and weaknesses, etc.

5. Develop a family case study: This could be a real or hypothetical scenario involving a family. The case study should be complex enough to allow the application of your chosen theories.

6. Apply one of the theories to the case: Discuss how the concepts of the theory can be used to understand the dynamics of the family in your case study. Also, mention any concepts that do not fit the case. Remember, the goal is to demonstrate your understanding of the theories and your ability to apply them to real-life scenarios.