1. Tailoring. This is not just for cover letters, every CV should be tailored to the job and organisation you’re applying for. Do this by reading through the job description and person specification and matching everything you say to what they want. Don’t have a job description? You can find an example on prospects.ac.uk.
2. Length. Your CV should be 1 or 2 full pages. No half pages: fill each page. Finance and management consultancy usually expect 1 page, however, this depends on the company so worth checking directly with them.