expand please 
Sure thing 😃
Materials needed:
Thin plasticard
Tissue paper
Mod podge (gloss)
Acrylic Paint (too blue, Caribbean blue, dark green, fawn brown, desert yellow, white).
Spray primer
PVA
Brushes
Patience
Steps:
1.Cut plasticard to desired shape (I leave one side flat and trim the other side in a wavy pattern)
2. Spray primer the modular shapes
3. Add pva to your beach area (about half of the modular section) and coat with sand
4. Water down the pva exteemely thin and lay sheets of toilet paper (rip into thin strips) on the other half of the section and make sure to overlap with the sand a bit.
5. Use a wide brush to push the soaked tissue into “waves” and also blotch the other areas that have water to give a more texture look.
6. Repeat until you have the desired shore feel
7. Once the glue has dried paint the sandy part of the shore. Make sure to paint some of the waves touching the shore in this color as you will blend everything later on.
8. Block the ocean side of the section in a dark green blue (outer edge), too blue middle, and Caribbean blue (closest to the shore where waves are crashing and its shallow).
9. While the paint is still wet use thinned down combinations of the colors to blend the shoreline, shallows and deeper water.
10. After the paint has dried, use a light dry brush of white on the waves/shoreline.
11. Highlight the sandy beach with a lighter color Mix with white for the final dry brush.
12. Use the gloss mod podge to liberally coat the water areas. Also some of the sandy shoreline to give a wet look.