Employers commonly look for a few main things.  These are probably the most important attributes that you can show to help you get a job.

Employability:  Proof that you are employable is a big asset.  Your employer needs to know that you will turn up everyday, on time and ready to work.  Your past work record including part-time, voluntary work or work experience can help there.

Ability to learn:  As a trainee or apprentice there is a lot you will learn.  You will be taught both formally (maybe off the job) and on the job.  You must be able to pay attention, listen and remember what you have been told.  This is improtant in any job.

Positive attitude and enthusiasm:  Employers are often looking for attitude more than skills.  If you have the right attitude you can learn the skills.  Show your enthusiasm by knowing something about the job, the names of some common tools, types of vehicles and equipment or detailing your previous work experience.

Team player:  All work involves working with others.  Employers want to know that you can get on with other people and work as part of a team to solve problems and get the job done.  This also includes the willingness to comply with all reasonable instructions.

Do's

• Plan what you want to say.  Why do you want this type of work?  Be prepared to tell your prospective employer why.
• Sell yourself.  Remember this potential employer may have seen lots of applicants for the job.  Why are you the one that should be chosen?  Prepare some questions to ask a prospective employer as this show your genuine interest. 
• Take a copy of your resume with a contact number on it and leave it with the person you speak to.  Make sure you can be contacted or a message can be left at the number you give.
• Be neat, clean and tidy, tie back long hair.
• Listen to what is being said and respond the best you can.
• Be enthusiastic and interested and remember, be yourself.
• Have an appropriate and professional email address listed on your resume for contact.

Don'ts

• Be late
• Chew gum or smoke
• Mumble or act disinterested
• Panic