Please help, I kind of know what to say, but I need more! Why do you aspire to be part of this company? Is tha question.

How about posting here what you would say so that others could come along to critique what you have to say so that you could write it the best in order to land the job?

Well why do you, if you don't want to be part of it, why are you even trying, Is it pay, benefits, chance for advancement

And, how do your personal goals also benefit the company?
What problems does this company currently face?
Having this forum critique your draft is an excellent idea.