Professional Cover Letter

I need a cover letter written. But I am working like 80 hours a week. I thought I would be able to get it done since it is only a cover letter but I have ran out of time and im heading into work now. Below is the assignment, rubric, and what I have started. I did start it just left me name and address off. This class is 250 Research and Technical Writing so the cover letter has to be spot on.