Can be acheived simply by
mixing the JD an ADS parts pour over ice and top up

or

Pour JD slowly, followed by ADS over ice then quickly add cola, this should naturaly mix the JD and ADS.

The taste should be sweet with a kick of JD followed quickly by an amaretto aftertaste.

Use one part for JD and ADS to begin, then experiment with different parts to suit to your taste.