As we can see on this screen view, the Frieze can to be projected same on all the small borders.
To do that, with a "Projective Flow" is not a easy thing, in this case.

With the same frieze, a base line (not a surface) + "Projective Flow (Straight)", to a target line (not a surface), we can get easily a nice crest on an helmet, like a mohican hairstyle (or some punks). MoI, it's fun!