Explanation:
Dear Uncle,
I am writing this letter to you to thank you about everything that you are doing for me and I promise that it would be one great adventure. I have a great will to succeed and accomplish my plans.
My plan is starting with the hospital rooms and I want to see where doctors are doing their job, I would love to write it so I can remember it and to get some pictures where I am allowed to. Then, I want to have better look in laboratory instruments and I want to learn about them as much as I can.
Also, it would be good if I have possibility to speak with some patient to see what are their wishes when people are trying to take care of them.
I am very happy that you will be the one who will help me about this important thing for me and my future. I will listen to everything that you say and a good student.
Thank you! Greetings!