When i use edge paint i do it like the video from the company that sells it. don't know why, following directions isn't always my first go to. i make my edges in different shapes from flat to round and if i want them to look nice and smooth i edge paint them no matter the finished shape. But I'm not ocd on edges. to me edge painting is more of a sealing, transition, completion than it is an absolute technique that needs to be followed to the letter. just another tool in the artists box. IMO