If you lie, you'll get found out eventually. This could cost you the job. List your qualifications and skills as that is what employers are most interested in. No-one I know takes the slightest bit on interest in the hobbies and interests bit of the application form/CV so I wouldn't bother including those. Start with Qualifications, then skills, then experience, if you have work on the web they can look at, finish off by directing them there. If they are interested in you they may look at it, so make sure it's worth looking at, and is grammatically correct. If it's not they may percieve a gap in your basic skills.

A page should do it.

When you write a letter make sure that it is shaped towards the job. If there is a person spec, use it to organise your paragraphs. Make sure you say what you will do as well as what you have done.

Two pages should do this, any longer and you're in danger of waffling.

Needless to say everything you send to an employer should be immaculate both in content and presentation. Use good paper, check your spellings and grammar, then ask some-one else to do so. Your dad would be a good one by the sounds of things. Finally if the company invites you to visit them, dress appropriately, smartly in a suit. Be well groomed and present yourself as confident, think about your body language. You are selling yourself, you have make sure you conform to what the company wants.