Chances are you will see only a dark egg. Shine the light near the large end of the egg and you will see the outline of the air sac and possibly a couple of veins. If you have a really powerful candler you will see fairly large babies who will have a moderate amount of movement.
I agree with Sumatra, you won't be able to see much movement during this period of the incubation.
Best of luck on your hatch! Hope you have an AWESOME hatch rate!!
~ Aspen
Thanks! I am trying to hatch six eggs! First time I candled (7th day) five of the embryos were all moving. Number six I wasn't sure on because the air sac was to the side and it didn't look like the rest. Second time I candled (14th) air sac was the same but I could tell something was in there! I candled yesterday and I saw movement in it! Hopefully it will survive! ^_^