If you are writing a letter, you should include in it:
Your name
Full address including zip code
Date
Recipient's full address( in this case address of your uncle)
Greeting( Dear Uncle)
The body of the letter should have a new paragraph with every different thought)
The closing( such as Yours truly)
Signature
First of all, you should write your name and full address with the date of writing and then your uncle's address. When you are done with that you can start writing. For example:
Dear uncle John,
How are you? I miss you a lot and I have remembered our talks about careers. That is why I decided to tell you about some of my thoughts and then you can give me some advice.
As you know, I am interested in IT. I don't have much experience so can you give me some useful advice. What job would be perfect for me at the moment?
