I can't find a resource for candling+egg development, but I think it would be really useful for knowing if eggs are doing well or not.

So for example, good egg==veins. Slug is yellow. Boob eggs. Moldy egg.

The eggs become hard leathery after 24 hours.
Then X weeks the egg should have that uneven look when you candle (the calciumish look rather than even color w/ veins)
Then the eggs if kept at the right temps/humidity will have a soft shell in X amount of days.
When movement should be there, etc.
Then the eggs will collapse and candle X way.
Then they should pip.

Anyone have anything like this with pictures with days attached? Would be good for the nervous first ball python breeder.

Mostly I've seen development in mom, but not for the eggs once out of mom.