Dear HR,
I wish to be part of your firm and it would be a privilege to contribute to its growth and future successes as an employee. I’m a graduate of the Polytechnic Ibadan with lower credit in National Diploma Electrical Engineering and also Federal polytechnic Nekede, upper credit in Higher national diploma.
I’m enthusiastic and  like to work with different ideas. I strongly believe that my skills will prove me to be a valuable resource for your organization. I look forward to an interview with you and the opportunity to create and grow as a commendable staff. 
Sincerely,
Mr. Lazarus Chukwujekwu.