Since the Graduate Trainee role is a fresh graduate/entry level position, this might be your first job and you may not have any experience at all in this field! Fear not, this is completely understandable and employers are going to train you before/ on the job. However, in order to compensate for this, you must demonstrate your competence in some other ways: Demonstrate that you are an energetic, outgoing and confident person Demonstrate that you care about customer service. In fact, make it a priority! Indicate that you are determined to set targets; quitting is not one of your attributes. Demonstrate that you can work in a team Indicate that you have excellent communication and organisational skills (if it’s true!) Demonstrate that you can work well on your own, as well as in a team Demonstrate that you have the ability to work under pressure. Demonstrate that you have excellent problem resolution skills. Demonstrate that you are open to different ideas, working practices and cultures.
http://myjob.ng/tips-on-writing-coverletter-without-work-experience

Good one OP... In addition to the personal traits to be accentuated, emphasis should also be placed on education and how enthusiastic you are coming across the job in question.

Benjom:
Good one OP... In addition to the personal traits to be accentuated, emphasis should also be placed on education and how enthusiastic you are coming across the job in question.

Yes sir