Click on this amazing link I found . This may help those who want to make sea shells with gum pate \ fondant 

This is brilliant, thanks so much, perfect for an order coming up.

If you are a pro at cakes\  modelling chocolate\fondant this will be a breeze !! I tried it, was a little difficult but at least it looked like sea shells :) Hope to get better at it in the future.. All the best for the upcoming cake!