Ok so follow up my previous question on how to create a group stroke with mask here.
I followed your steps & basically solves my problem. OK let's just say i done all that, then my boss said oh lets add spikes to the cup, ( well in real illustration it could be more complex case )
So i did changes to the original layer , now how do i quickly apply those changes to my mask?
or the only way is to repeat, copy paste infront mask again? thanks!