take a large bowl any type metal and glass works well a pot pan or a dish that matches the bottom of the bowl size so it could be placed on the dish with water filled half way and set it to boil.
make your bar chocolate into crumbs and place in the bowl over the boiling water so it melts completely with out any solids of chocolates.
when the chocolate is in a runny state add spoonful into your mold and slowly swirl it a round right to the edge of the mold try your best to keep the chocolate moving all around to get a thick coat. do this till the chocolate stops moving set aside and let it harden
while that is resting do the same with all the molds
start once again from the first mold to give it a second coating
once they have set slighty heat one half of the egg flat way and join it with a another half before this you could add surprises in them use your imagination to decorate them in packings of your liking or just in a simple transparent wrapping with a pretty bow.
it just take three attempts to make a perfect one happy easter