I made a horizontal card rather than a vertical one -- using pattern paper to create the beach feel of the card.. For Element #2 I found a K & Company die cut sea shell the same shape.
BUT . . . the best part of this card is on the inside. I recently bought a Karen Burniston Castle Pop-Up die. Using shades of brown, I made a sand castle for the inside of my card. I included some more of those K & Company die cuts to decorate the inside also.
My daughter, who loves everything beach-related, will wind up with this card.