If you click on the link above this picture you will be taken to a page which explains why Oriental Shorthair cat ears must be large.
However, they are meant to form part of the wedge shape of the overall head but these are ‘helicopter ears’ sticking out at the side of the head. They are inordinately large and unnatural.
I suppose beauty is in the eye of the beholder. I would prefer the ears were more normal and more on top of the head. Perhaps the ears will develop that way as the cat becomes more adult.
The straight profile from the forehead to the tip of the nose is in compliance with the breed standard.