Shades of blue in Quartered Circles

Do not be fooled by this card.  It is not as easy to create as it may first seem!  When I found a similar card on Pinterest (you can follow me here), I figured it was a cute and simple card to make.  I picked out my colors and punched some circles....then the insanity began!  I could not cut the circles into even quarters, no matter how many different techniques I tried!  If someone knows a trick for this, please let me know.

The colors used for this card were Island Indigo, Baja Breeze, Pool Party and Not Quite Navy.  The 'hello' is stamped from the stamp set My Friend.