This one might be doable. Use icing instead of candy to make the snail shell pattern. Smash cake. Fondant for snail body?
Coolest Snail Cake... This website is the Pinterest of birthday cake ideas
Handmade edible garden bug ladybird, bee etc cake topper decorations in
Cute Garden Critters bee ladybird spider caterpillar snail cupcakes
Bear birthday cake topper
Cute Snail Cake Topper Figurine....could be made w/ polymer clay..
Cheese & pesto whirls | BBC Good Food
Gaston the Ladybird - Cake by CraftyMummysCakes (Tracy-Anne) Ben and Holly's little kingdom https://www.facebook.com/CraftyMummysCakes