Orangecar

Hi! Act Editor have been a huge help in my spriting as I'm completely new to making these stuff. I tried using the merge layer script as well as this script (which is from you too) I found in forums but my headgear keeps getting a line around it. Can you help me? Context: I'm trying to merge a fairy ears headgear into a blinking eyes headgear. I notice the lining only happens when I merge it.