Short and Sweet
Short cover letters which are straight to the point will jump out. Don’t bother with the formalities – go straight into why you would be good for the job.
New Information
Do not just repeat your CV – it’s unnecessary and a waste of time. Instead highlight and expand on parts of your CV which are relevant to the job you are applying for.
Make it Personal
If you have a connection or history with the company, mention it. A covering letter should make you sound interesting, not generic and stale.
Talk About the Company
Show that you are enthusiastic and interested in the job by researching the company. Mention why you would fit into that company specifically.
Use Short Sentences
Short sentences (2 clauses max) are easy to read. Don’t use big words but sprinkle some of the company’s jargon from their website or literature.
Avoid Cliches
I hate cliches. You should too. Do not use them. Just a few of the worse: cutting edge,110%, world class.