In this tutorial I will teach you how to create a Shiny Sun
1 :
Start out by creating a 500 x 500 pixels document.
2 :
Press D 
3 :
Draw a circle using this tool: 
4 :
Now go to Filter > Render > Difference Clouds. Now you should have something like this:
5 :
Go to Image > Adjustments > Levels
you should now have something like this:
6 :
go to Filter > Sharpen > Unsharp Mask,Set amount to 50%, Radius to 3.0, Threshold to 15. Now you should have something like this:
7 :
Now go to Filter > Distort > Spherize. Set the amount to 100 %, you should now have something like this:
8 :
Repeat the last step but change the amount to 50%, Now you should have something like this:
9 :
Now go to Image > Adjustments > Color Balance,use these settings:
Now you should have something like this:
10 :
Go to Filter > Sharpen > Unsharp Mask
11 :
Final Result:
