if your having trouble for changing your icon, (like you can't change your icon), go to Google plus to change it! (to @TeamYouTube)
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
if your having trouble for changing your icon, (like you can't change your icon), go to Google plus to change it! (to @TeamYouTube)