#1  Start with a 400 x 400 canvas filled with a Christmas pattern

 

#2 go to Effects/Reflection/ Kaleidoscope.. apply

 

#3. Effects/Geometric effects/ Sperize

#4. Make a Circle selection over the sperized part of your graphic

#5. INVERT  CUT... It wont be on transparent bkg.. If you don't have it as a raster layer and not a bkg layer

#6.  Yours should look like the below sample

#7. Apply either EyeCandy 4000 or 3.1  Glass to it..

I used Eye Candy 3.1 on mine

#8.  Apply 3D drop shadow to your spere... With settings below.. Then V  -3 and H -3

  

Finished ball.. Decorate like you'd like..