Perfect! I could have just left it like this - but where would be the fun in that :)
Fimo, a kind of modelling clay that sets solid once baked. Making figures from modelling paste is incredibly similar.
The models themselves are just made from regular supermarket sugarpaste with added Tylo powder (CMC). Working this powder into the paste and leaving it to rest turns it from a soft and sticky icing into a very pliable yet strong gum that you can do fine work in and will also hold it's shape. This kind of work would be impossible without something like Tylo.
It's important to use good quality colouring pastes to get a really deep colour - liquid ones will just not work. I use Sugarflair colours. I did concede and buy the black paste, however, as I've found it's a pain in the ass to make your own truly black icing. I also use an edible glue to stick the different components together and reinforce them with dried spaghetti - everything you see is entirely edible - well except the ribbon!
I think I love the simple gold baubles and the fish shaped present the most. It's really the small details that make this cake what it is.
Merry Christmas Everyone! :D