Candling Attempt - Does It Look Right?

[Kangasox]

Ok...made a candler and tried it out. My duck eggs are arriving tomorrow, so I wanted to practice to see if this looks right? I used the lightest tan chicken egg from the Farmer's Market I had, I assume it's unfertilized and has been refrigerated. But is it glowing enough? I could not discern an air sac or yolk, I don't think. Will it be obvious with a lighter colored fertilized egg? Just want to be sure I'm on the right track before I candle the real deal. Thanks!

 

[WalnutHill]

The air sac is right at the level of the cardboard, and in a fresh egg will be small and shallow, between the size of a dime and a quarter. Tilt the egg a bit to get a look at it.

The yolk is in the dark shadow near the upper third of the egg. You can't tell if an egg is fertilized until it has had a couple of days of incubation.