what age and what pic angles for posting gender guesses?

[Angelicisi]

I have wheatan or blue wheatan/splash ameraucana chicks. Could have a mix I was told
I suppose this is a broad spectrum of answers depending on breed of chicks but at what age is it best to try taking gender guesses? And what camera angles are most helpful to the people who know what to look for? Just curious. Mine are a bit too young yet, almost 3 weeks so I'm trying to be patient lol

 

[Habibs Hens]

best Is close up pics

get face and comb

and whole body standing

age from 4 weeks onwards

 

[Angelicisi]

Kewl beans! Thanks