Fine place for mascara that’s overly decorative (5)

I believe the answer is:

flash

I'm a little stuck... Click here to teach me more about this clue!

'overly decorative' is the definition.
I can't judge whether this definition defines the answer.

'fine place for mascara' is the wordplay.
'fine' becomes 'f' (abbreviation e.g. condition of old coins, books).
'place for mascara' becomes 'lash' (I've seen this in another clue).
'f'+'lash'='FLASH'

'that's' is the link.

Can you help me to learn more?

(Other definitions for flash that I've seen before include "emblem on uniform" , "Mo" , "sort of flooding" , "Ostentatious" , "Moment" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.