What is the temperature of the incubator, and how humid is it? In general, you can usually expect a smaller number of viable eggs from first time breeders.
You might try another substrate for your incubator. I prefer perlite that's been wetted down and then squeezed until all the water possible is removed, and possibly even left to sit. You want it to be just damp enough to hold together, not too wet or too dry. If you go this route, be sure the perlite doesn't have any additives for fertilizing plants. I use Gro-Well brand perlite. It's available at nurseries. Some people swear by Hatch Rite or Hatch It, but I've had poor luck with those.
What kind of incubator are you using? A commercial one or one you made yourself? If it's a home-made one, does it have air holes, or are you opening it to permit air exchange?
The Pangea forums is the best place to get help with cresties. I used to be very active there.
For what it's worth, I have a male like that, too. He's a beautiful home-bred red harley with plenty of white markings but he imagines himself to be a Tokay gecko. He bites me on a regular basis. Fortunately, their teeth are pretty tiny. One of his offspring has the same personality, and, of course, that would happen to be the nicest looking one, the one I plan to keep. She gaped at me three times in the first minute or so right after hatching, so she's named Tokey.
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