After a few text messages with a friend, I received one that read "Your funny". I wondered what she meant - Your funny face? Your funny smile? Your funny feet? Of course, what she meant to say was "You are funny". To use the contraction correctly, it should be "You're" (or in a text message, say "u r".
Remember, your is possessive. It describes the word or words immediately following it.
Your experience, your confidence, your hair, your nose.
You're is a contraction that means 'you are'.
You're the right person for this job. Please give me a call when you're next in Singapore.