Use a GRID to create an eye-catching layout.
Notice how the horizon of the beach lines up with the sand and water. This will make your photo look consistent and will add a continuous form of consistency throughout your design.
Also, you can use the same colors and vibe (in this case it’s a beach vibe) to create a theme.
Grids make for a quick + easy way to create your own layouts. You can use apps like Canva or Collages Maker, or other apps such a Befunky and PicCollage.
Have fun with it!