Melt the chocolate wafer in 30 seconds intervals, don't burn.
Fill the egg mold, let harden. If you have the 3D egg mold, it would have 2 cavities to make a whole egg shape. If you don't, just do it twice.
Meanwhile, make decorations using fondant (or others I mentioned). Color, shape, cut as you please.
Once chocolate harden, unmold it and fill with mini chocolates (or others I mentioned). Attach both egg sides with melted chocolate and start decorating!
Attach decorations with melted chocolate if needed (such as for the roof and door).
The island is cake, the red and yellow flowers are wafer paper, the rest are gumpaste.