You may not need this right now if you have little ones but this is a mere glimpse into the future.
You will need several tonnes of white fondant / sugarpaste or ready coloured packs available from Wilton. Start the project several weeks ahead of time to allow the figurine to dry thoroughly.
Add features and details.
Shape body torso and hands / gloves.
Roll out lower body and divide into legs.
Mould the shoes.
Add each additional part with sugar glue [take a small amount of white fondant and add a few drops of boiled water until the required consistency is achieved.
Leave figure out of direct sunlight to dry, preferably hidden to maintain the surprise factor.
Pop on the cake, light the candles, step back and admire the view of unencumbered freefall delight.
Why bother? Because sometimes speechless really is priceless.