Hi all steemians,
This article will show you how to add or change the steemit profile picture.
So, Lets start.
Step 1 : Upload your photo to any of your social media accounts (FB,LinkedIn,G+,Twitter, etc.) or find an already existing one.
Step 2 : Now open that photo there(You must be using any browsers), Right Click and select "Open image in new tab". In the case in FB, you can get that image by clicking on view the photo in full screen.
Step 3 : Copy the URL from address bar. 
Step 4 : Now, open your steemit, click on your profile and select "Settings" 
Step 5 : You can see the text field where you can refer the photo URL. 
Paste your photo URL there
Step 6 : Click the Update button down to the form. 
There you go! Now you will be able to see the photo as your profile picture. As you can see mine below.
Hope this one helps.
Thanks for reading.