Candling tomorrow might not provide you with any information. There is a lot of good information about candling in these forums, I think you want to wait at least a week.
Well, I guess we'll join in the fun.
This is Bonnie the Broody. She's a year old Orpington. She's been hogging the nest box for over a month, but didn't quite make the commitment to being a broody until I took her out of the rest of the coop last Sunday night and put her in with eight store bought hard boiled eggs. Monday morning she SCRREEEECHED when I opened her door! Puffed all her feathers up too! She stuck with it through the day so we took out the store bought eggs and tucked in all the eggs our other girls laid that day, plus a few from the day before. Eleven eggs. We'll candle them tomorrow night to see how things are progressing.