Hover over your name (located in the bar along with alerts and inbox) and go to Personal Details. Scroll down, and in the sidebar you will see a section labeled "User Name Change" You can figure it out for yourself there.
You have changed your name successfully so I will go ahead and lock this thread. Feel free to make a thread in the future again if you need any more help!
Thank you for your thread on a recent issue. The issue has been resolved. This thread has been moved to the Help Archives.