I have the instructions for reconstituting the powdered eggs and will get the recipes on here later when I have more time to type.
Whole Egg powder
To reconstitute one egg: mix 2 tablespoons whole egg powder with four tablespoons water. to make the eggs a bit richer just use three tablespoons of water and one of milk.
If you are using the powdered eggs in baking, you do not need to reconstitute them. Just add to the other dry ingredients and increase water measurements in the mixture to necessary amounts.
Hope this helps.