The cover letter for a job offer can be likened to a response to the job offer which is the recruiter’s specifications. You will have to argue your application point by point: training, experience, personality on the three types of information present in these ads: the company, the position, and the profile sought. Have an objective but also the intuitive reading of the required criteria (team spirit, negotiation skills, rigor): some criteria are absolutely essential and non-negotiable, like free essays no plagiarism, others are probably less essential and some of your strengths can compensate for weaknesses. The main defect of the cover letter is to be too vague when the recruiter needs to be reassured … and therefore appreciates the applications that prove to him «quickly» that his need has been understood by showing both a real interest and skills. If precise and specific criteria have been stated, you must answer them by justifying concrete examples from your background. «Market» your application using the specific jargon of the company, the famous «keywords» that will be really sesame if you inject them wisely.