one major note is DON'T use emotive words, like "I think", "I believe", "I feel" - think like a man and use strong statements.

Like when they as if you've got prior experience in X or can gain it rapidly - don't say "I believe I can ....." say something like "I have gained knowledge in Y when in Z job, which demonstrates I can learn X in this job".

Just about to head into work, will email stuff when I get there