I had 3.5 mm silicone inserted and used ear cartilage for the nasal tip.. Maybe because my nasal bridge was originally very low, it still doesn't look high even though it's 3.5 mm.
For the shape, I got a straight-semi-upturned style, which you can think of as a shape between a straight nose and a semi-upturned nose...
But the straight-semi-upturned style feels a little noticeable..??? Maybe because it became like a straight nose, I feel like I look more handsome haha