You see many wordpress blogs provide author information after each post with his avatar picture. You want to show your own picture on your blog but you can’t find anywhere to change it. It always displays a default profile picture. I will tell you how to do it.

Gravatar

Everything is done on Gravatar. All you have to do is to sign up an account at Gravatar with the email address that you use for your wordpress user account. Then you upload your image to your Gravatar account. After you’ve finished your Gravatar image will appear whenever you post on your own blog or on other wordpress blogs.

That is the simple way to change your wordpress profile’s photo. You can also use some wordpress plugins to do that. You can google them yourself. Good luck!