The cover letter has to be drafted specially to the firm (sullivan cromwell) and

The cover letter has to be drafted specially to the firm (sullivan cromwell) and should be a fit for only it. so it has to highlught the unique aspects of it.
I am attaching my CV.
the cover letter should answer: Why Sullivan Cromwell, why commercial law, what skills I have developed that makes me a good fit and how I did it. Firms programmes web page: https://careers.sullcrom.com/uk-trainee-solicitors (please browse around the page and the hyperlinks).
I am attaching my cv, my most releevant work experience that should definitely be in it is Cadwalader. my other work experiences are relevant too.
I am attaching a draft that i have written. it has a very strict deadline.