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* The noun ‘mistake’ is used with ‘make’ or ‘commit’. So ‘a mistake that was done by me’ is stylistically incorrect although very commonly used. ‘a mistake that I made’ is much better.
* ‘a professional ethic’ ( I think ethic is not used as a countable noun like you have here )
* Are you sure you wanted to use ‘chronological’ here? It’s not entirely clear to me what is meant here.Score: 2.5/3
