i have had two eggs successfully hatch, but i have had a few eggs die. they get white fluff over them and then collapse.
whats the best way to incubate them as i am probably doing something wrong!

Your best bet for a proper answer to this one is to aim it at the Breeding section of the forum as incubation is near enough the same for the majority of reptile eggs apart from a few altarations.

well my geckos haven't started yet but i am buying a hovabator incubator, im going to put the eggs in a tub with moist vermiculate.

homemade incubators work just as well

The white fuzz is mold which is from too much humidity in the container. I've had this happen with vermiculite a number of times. Now i just use moss and never have to add water all the way through breeding season. Occasionally I have found small patches of mold growing on the moss, but never on the eggs.