Aim for a single page
Your letter doesn't have to be lengthy to be effective. Stick to a single page where possible and remember that good cover letter layout involves dividing what you have to say across three or four short paragraphs rather than a single block of text.
Use the first paragraph to note the role you are applying for and how you found out about the opportunity. It’s also appropriate to mention your qualifications, current position and length of industry experience.
Use the following paragraphs to outline your skills and why you are a good candidate for the position. Don’t simply summarise your resume. Use this part of your cover letter to fill any gaps in your resume while staying relevant to the advertised role.
The final paragraph of your cover letter can be used to reaffirm that you believe the role is an exciting opportunity and note when and how you can be contacted.
Always proofread your letter
Be sure to spellcheck your letter. No matter how professional your cover letter layout is, a single typo or spelling error can scratch you from the list of potential candidates for interview.
Once you are certain there are no spelling or grammatical errors, carefully review your cover letter for flow (it can help to read it aloud). Ask others to proofread and critique it as well.