Here is a card I made using one of my svg card files.
On the bottom of the card I brushed some Modge Podge on the card and then covered it with sand. Then I used my heat gun to dry it. Next I put more Modge Podge on top of the dried sand and placed some sea shells on top and added a little more Modge Podge on the bottom of the shells. I then put more sand on top to cover all areas. Once more I used my heat gun to dry the Modge Podge. After it's dry it is very flexible.
Well I hope you like my card. Thanks for looking!!