Below are some issues you should try to avoid on your resume.
Check for words that may be spelt incorrectly - especially for differences in UK vs US English.
Check for errors in your grammar, and avoid cliche phrases.
Avoid adding details that have little to no significance towards your target role.
Avoid including qualifications that are expired, use up to date qualifications.
Avoid passive sentences, use concise action-focused sentences.
Use fonts that are easy to read, use appropriate spacing in your content.
Be consistent with fonts, sizes, and colors in similar areas of your resume.
Use a layout that is visually appealling and easy to follow.
Below are three (3) websites you could visit to download free resume samples to get you started.