In this tutorial i will show u how easily you can add a glow in your Balls / Designs like this in Picture below



Step 1 :- Make an image of whatever u want on which u like to give Glow. Here i am using a 300X300 Canvas with Transparent background with a Circular Ball with the help of Ellipse Tool.





Step 2 :- Use ellipse tool once again and make a small ellipse covering the circular border of the Ball image.



Step 3 :- Finally give the small ellipse gradient and then set the Transparency to 60%.





RESULT :-

Sample :-
Thats it !!!