I'm following a tutorial, and the teacher uses the subdivision Surface Modifier after finishing the modeling. and here is the result:

And when I do this, it's like jaggy on the edges:
How should I fix this?
Thanks.
I'm following a tutorial, and the teacher uses the subdivision Surface Modifier after finishing the modeling. and here is the result:

And when I do this, it's like jaggy on the edges:
How should I fix this?
Thanks.