Ehem,why did you use the same pic as the tutorial ? hmmmm...
Well it looks kinda-kinda 7/10 the chunks of land (lol moneys) are too high in the air.
Ehh you forgot to say that you used some falling money render...
Also the explosion looks to *Not Random* Look at the base here :
^_^ Tut pic,next time use an original pic,at first sight i though it was copy & paste.