Welcome back ria_rose.
Your Trade Expectancy Sheet will be a useful tool to gauge your results but it looks too backwards-looking for me to say it will be very useful in improving strategy.
Its a database and the mistake most people make about a database is asking themselves what data can be put into it. This is wrong. The first questions should be what do I want the database to help me do, and the second question is, so, what data do I need to collect so I can do those things?
Collecting data on your win rate will not help you improve your win rate, it will only prove that you would like to improve your win rate (but you already knew that).