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The eyes are probably marzipan, actually.

I find that fondant melts a little too easily even with more chocolate and less cream.

The blue stuff looks like it is coconut with blue food coloring in it. It'd be easy to roll a freshly frosted cupcake in it then make the slice for the cookie smile

Use blue frosting to cover up all the tiny little holes in the coconut to keep the look streamlined.

Sorry for the late response, i hope that this helps smile