Body of a Cover Letter
Capitalise the first word of the text (even if the salutation ends with a comma). The text is left-justified and a blank line is put after each paragraph. It is not common to indent the first line of a paragraph.
Structure and Content
Mention where you found out about the job offer and show interest in the position.
Give reasons for your application: Why are you the ideal candidate? What relevant qualifications, experiences do you have? (Important: refer to the requirement given in the job description.)
Demonstrate your interest in the position once more.
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