Hi Sonia,
We have been doing the same procedure for many clutches over the past several years, with great success, so I will be happy to share.
When the hatchlings emerge from the egg, we gently brush off any vermiculte with a sable brush (I sacrificed a lipstick brush) and place them in the "incubator tub"... This tub is a 60qt or 108 qt Rubbermaid/Sterilite. The tub has paper towels on the bottom, and miniature house ivy (4" size) plants (1 or 2 in the smaller tubs - depending on bushiness - and 2-4 in the larger tubs). We place lots of thin branches (corkscrew willow work great) for walkways in and around the plants. Be sure not to have anything too close to the top (they are escape artists).
Next... dampen the paper towel with warm water - and keep it moist. This provides humidity. For the first few days, I keep the tub warm - about 80-84F (you can use a heating pad under the tub). We have a digital themometer/humidity gauge that sits in the tub.
Use a fine warm mist to dampen the leaves for drinking, and supply fruitflies (after misting). To keep the fruitflies in the tub, we place fruit wedges (orange, apple, banana) on thin wood skewers - stick in the plants near the walkways (provide several for less competition for the food). We keep our tubs "bug escape proof" by using Bug Barricade (a product you paint on the rim - and the fruitflies/bugs can't walk over it - its like teflon). When the chams are 1-2 weeks old, we supply 1wk crickets too.
After a few days, we start lowering the heat source from the bottom and focus on the basking lamp over the tub. Be careful not to use too hot of a bulb (we use 60 watt regular light bulbs) and be sure to use your reptile UVB bulbs (we use the 4ft tubes over the tubs). This provides the temperature gradient that they need as they start feeding and growing. But the ambient room temperature is never below 74F while they are just tiny babies. If the room gets cooler at night - use a red heat lamp to regulate the ambient room temp.
Keeping the hatchlings a bit on the warm side seems to add to their appetites and growth. Be sure to use a good digital thermometer (Radio Shack).
Hope this helps...
Morgana - Reptayls, Ltd.