tile
Cut out the square tile.
Throw away (recycle) all cutouts - you won't need any additional pieces.
Draw any shape at the bottom of the tile.
Start at the left bottom corner and finish at the right bottom corner.
Cut it out
Slide the cut piece to the opposite side and tape it.
Make sure it is perfectly aligned.
Draw a random shape by the right side of the square.
Start at the top right corner and finish anywhere on the grid line - not all the way at the bottom corner.
Cut it out.
Slide across and tape.
Check alignment.
Draw a shape at the left side of the square trying to continue the outline of the top shape.
Cut it out ...
Tape.
Your tessellation tile is done!