The risk of talking about l'eadership, teamwork, communication and things that I guess would fall under value addition (creativity, dedication, having an 80:20 mindset, structure, zero-defect analysis etc)' which Bainee suggested is that it is pointless to make any statement about yourself which you cannot evidence. You could cover the page with telling everyone you are dynamic, team orientated, good communicator etc but 1 they will see whether you are (or not) at interview and no one expects to ascertain your communication skills from a CV/letter 2 they cannot be substantiated, wasting precious space on a single page better dedicated to selling what you CAN evidence. Same for motivation - you are sending your letter/CV to company X, so for the moment your motivation for applying is less relevant than the fact you are motivated to do so at all; they will look to learn about specific knowledge of and interest in their firm at interview, so again don't waste the space.In a strong cover letter, introduce yourself, why you are applying to them at all (if you are a marketing expert for example and the role is in marketing consultancy), and 3 to 4 BULLETT points no the problem/solution/result principle.Simply sign off with a reiteration of interest. Don't tell them in a letter you can be free anytime for interview - it's a 2 way street after all and your time is also precious. The whole idea of a cover letter is to introduce the real del - your polished CV, not to replace it.