change in profile pic

1.Go to Gravatar here's the link http://en.gravatar.com/

2.Sign in with the same mail id which you use in Indiblogger

3.Upload and save the picture. 

Hope it helps. 

Add to Gaurabs reply > make the image General or G in gravatar or it will not be visible across the forums 

thanks @nandini @gaurab and @ vijay for your suggestion. it was of great help.

Welcome Shudhrita 

You are welcome