I can't take credit for this card. My (nearly) 5 year old son made it with my mum when she was visiting. She saw several like this on Splitcoaststampers.
A simple bt affective card using the Pick-a-petal stamp set, Boho Flower punch for the sun and the ripping technique for the sand and sea.
Ps. My mum had never stamped before she came to visit at Christmas!