Your strategy is based on technical analysis i.e. moving averages. The assignment states “The strategy must be based on fundamental analysis not technical analysis” and
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You are free to choose the investment strategy, but some possible topical approaches to frame the portfolio formation might involve environmental, social and governance (ESG) factors, financial technology, artificial intelligence and big data or international politics and trade.” Using moving averages does not reflect this type of approach.
Your document is lacking “a detailed explanation of the rationale for the strategy”. You have written a lot about backtesting as an approach, but little about the actual strategy that you have chosen.
I don’t think you have engaged in any data collection for the assets in your portfolio. “Ability to collect real-world data and to implement analysis in Excel”.
The references are of mixed quality. Try to use more from journals e.g. you have one from Journal of Banking and Finance.