Hey guys, hope you all are doing great.
I heard it in a TV series called "izombie".

There is a police sketch artist trying to draw someone and the girl who is explaining the features says:

His lips were thin, but there was substance to them. I think the nose needs to be more alert.

Sketch artist: I thought you said it was soft and gradual, like a sand hill.

The girl: But with an alertness. Like the whole bridge is working towards getting down to the point. You need to see the foundation.

The whole sentence is challenging for me guys, the artist get confused too. I just know that "bridge" here means "bridge of nose".

Thanks in advance.