Ensure your pink acrylic is masked before engraving and cutting. I recommend using white masking tape for this.  
Step 1: The red layer is the engraving step and should be completed first.  
Step 2: The black layer is the cutting step.  
Step 3: Using a paint pen, fill in the engraved areas. Allow the paint to dry completely before removing the tape.  
Step 4: Attach the earring hardware.