Finish by shaping the paste into a flat cake, then carefully wrap in plastic film and keep in the fridge, where it should stay usable for several days, even 1 or 2 weeks.
Remarks
You'll notice that we sweeten this less (icing sugar = 50% powdered coconut) than marzipan, because coconut is naturally sweeter.
For some strange reason, coconut paste tends to harden if kept in the fridge, so to use it soft, remember to take it out at least an hour before using.