Dear Sir. How do you do?
I have seen your description very carefully and posting to you my idea.
If you give me a chance to interview, I'll explain in more detail and I'll do my best for you.
I will work hard and hard for complete this task successfully.
I'd be happy to carry out, if you'd like. I can work for you as full time.
If you would success, that would be wonderful
Looking forward to your good response.
Best Regards