How to Customize Your Twitter Profile
Your public page on Twitter, also known as your profile, is other Twitter users' first impression of you, and it can make a big difference in whether they decide to follow you. Customizing your Twitter profile page so that it reflects you or your business makes all the difference when it comes to whether people follow you to see what you have to say.
After you sign up for Twitter, one of the first things you should do is personalize your profile. Make sure that you have
An avatar (a picture that shows up to the left of your tweets, representing you or your company)
A background image or background color for your home page
A bio that's 160 characters or less
A link to anything else you want to share
After you log in to Twitter, you can customize your profile at any time by clicking your Twitter username in the top-right navigation bar and choosing Settings from the drop-down list. You change your background image by clicking the Design tab on the Settings page.
From the Design tab, you can change the background colors and text colors of both the main Twitter timeline and the sidebar on the right. And, of course, you can change the background image that sits behind it all. Twitter offers you some themes that set all of these for you, or you can click the buttons below those themes to adjust them yourself.
Some of the best profile pages on Twitter are the ones that give you a look into that user's personality. Someone who loves to ski might upload an image of his favorite mountain range as the profile background and pair it with an avatar that depicts him in ski goggles.
You don't have to bare your soul, but people on Twitter want to know something about you, and the public page is where they can first discover it.