Drag the piece onto the board to fill the gap.
Sometimes you'll need to rotate a piece to place it.
Tap a piece to select it and then rotate it.
Water and grass can't touch, sand must go between them.
Paths cannot suddenly end, they must be connected. Sometimes there will be multiple separate paths on a board.
A real board is several pieces that fit together.
Use everything you've learned to complete this one.
Tap a piece to pick it up, rotate it if needed, then place it on the board. Tap a placed piece to select again. Tap and drag a piece off the board to remove it.
Fill the whole board so every touching edge agrees:
There's no single answer, any fully-filled board with matching edges wins.