I made these deco sweets cases recently.
The whipped cream is spac filler mixed with acrylic paint, and the sauce is glass paint.
Minnie Mouse theme.
The cream is simply piped out of a piping bag in the same way as real cream.
Sugarbunnies decorated on an old Bonne Maman jam jar. I'm going to make the whole Suagrbunny series eventually.
You can purchase the cakes and fruit from Ebay, Etsy or Rakuten
You can also purchase the crystals and pearls there as well, but sometimes you can find ok ones at the craft shop.