HELP NEEDED!!!! HOW TO LINK SUBDOMAIN TO PAGE???

I want to link a wordpress page to a subdomain.

This is what I have done: I created a page:
http://www.stephiesays.com/street/

I want to have this URL address for the above page:
street.stephiesays.com

Every time I create a redirect from the ‘Subdomain’ section of my host Bluehost.com’s cPanel, I will get an error message.

Question 1: How do I ensure a smooth redirect?

Question 2: How do I ensure that the URL reflected in the URL bar reads ‘street.stephiesays.com’ instead of ‘http://www.stephiesays.com/street/”?

Your answers and advice will be very much appreciated. Thanks in advance!