Writing a CV which best describes your capabilities, and abilities, should be the aim of any CV. If you fail at doing this, it could indicate that you’ve gone one of two ways:

You could have used the opportunity to write about things which overtly talk you up, without actually providing any quantifiable information.  This positive impression that you are forcing upon the person reading your application can actually have the opposite effect, causing you to lose a solid opportunity.

The other potential pitfall, is when you provide a false impression on your abilities. Apart from this being moderately, to highly fraudulent, falsely advertising your capabilities will place a huge trap for yourself if you actually get the job, which may effect future opportunities as well.

To write a good CV, you should, of course, provide all of the relevant job history, and qualifications. From there, you should ensure that the application is well written, and clearly describes everything that you are trying to say. Creating a well-thought, straightforward, honest CV is always the best way to introduce yourself to a potential employer.