First, twitter banner is a pic which give you direct link to your twitter account.
By clicking this banner, people get an easier way to follow you on twitter and you can also boost up your follower.
All you have to do is:
click Twitter Banner Generator
Open up the page – I find this to be extremely helpful.
Look at all the cute banners, and find one you like.
Once you have found one you like, click on the little circle on the left site of your banner.
Scroll down to the bottom of the page, and put in your exact Twitter User Name.
Then all you have to do it click, Submit and Get Code.
s: My Racket