A well prepared CV is not as easy to create as most job hunters think. While many people have a general idea about what should be in (or out) of their CV they can never be aware of all the guidelines and expectations that a specialist in this area can be. A CV writing specialist will be completely knowledgeable in all areas that recruiters will be looking to review at any time and for any specific role.
The days of a lengthy CV are gone. Now the general rule is the briefer the better. Many recruiters expect no more than 2-3 pages but of course this can create difficulties especially if the new role is complex or your own professional experience is extensive. It then means your CV has to be prepared carefully to meet the recruiter expectations in terms of size but also to make sure the job hunter can also reflect their skills sufficiently in a succinct manner to get an interview.
Very possible it will. It will depend completely on the country. While the general guidelines are often similar there are definitely differences in terms of specific expectations. Most often this is to do with the level of content provided. Some countries have expectations for 3-4 pages while others can want to see everything on just one page. You can let us know what country you are applying in as we quite possibly will have had first-hand experience of what they require.