I'd try to keep it to a 1 page letter, to be honest - with a 4 - 6 page CV - listing work experience, and maybe a page of 'skills'.... I usually have my skills listed under headings... such as....
adminstration skills, tutoring/training skills, professional skills, other skills....

when I used to work in employment services, that usually how I wrote them for others - and TFB is right.... employers never wanted to read long winded applications that were sent, they always looked at the CV for the information, and wanted it easy to find

good luck!