In the middle of a paragraph I want to write-
Aging with perfection. Something to be appreciated.
are these complete sentences? this is how i want them presented
No, they're not complete sentences, as they lack a finite verb. These would be complete sentences:
1. She has aged perfectly. It is something to be appreciated.
However, as a stylistic device, sentences like yours are not uncommon, especially in e.g. later 20th century fiction and magazine articles.
Not a professional ESL teacher.