It helps you to see a little girl's piece of work (5)

I believe the answer is:

visor

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

'piece of work' is the definition.
'visor' can be an answer for 'piece' (I have seen 'piece of armour' mean 'visor' so perhaps 'piece' could also mean 'visor'). I am not certain of the 'of work' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for visor that I've seen before include "shade" , "Face-protector" , "Eyeshade" , "One protecting" , "Part of an armour helmet" .)

I've seen this clue in the Evening Standard.

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.