Hi, shadrack alosa!
If you would like to post a draft copy of your letter here without putting in any contact information in it, I'm sure that there will be those of us who would be willing to take a look at it and advise you as to how you could make improvements to it.
I usually like to start my cover letters with the following opening statement.
Dear _____,
Please accept this correspondence as an indication of my interest in...
There are many examples of cover letters that you'll find by clicking on the following link.
How to Write a Cover Letter - Google Search
If you do that, you will most likely find one that you could then tailor to meet your own needs.
Thanks!