I give you 4 reasons why you don't change your mind on which end is up after you screw the face plate on.
A 6 inches round by 3 inch tall walnut bowl out of a blank from my friend Larry.
As you can see in the pics there are 4 white spots where the face plat screws where. I had it all screwed on rounded the blank up and decided that the other end would be a better top. So I switched ends with the plat thinking I would just turn out the screw holes.(NOT) The blank also used to be 2 inches taller but as I was taking it down to finish thinness a piece about the size of a quarter vanished from the top lip.
Oh well this is what I ended up with.