Make pool wall and tiles. Roll out white fondant 1/2 in thick. For base of raised area around pool, use knife to cut two strips,
1/2 in. wide x 12 in. long. Position on short ends of cake. Cut two strips, 1/2 in. wide x 18 in. long. Position on long ends of cake. Trim to fit as needed.
For tiles on sides of pool, roll out white fondant 1/8 in. thick. Use knife to cut
two strips, 2 1/2 in. wide x 12 in. long, and
two strips, 2 1/2 in. wide x 18 in. long. Use fondant ribbon cutter with four straight cutting wheels and 1/2 in. spacers to lightly score lines across the length of strips. Repeat across the width of strips to make perpendicular lines for 1/2 in. squares. Use damp brush to attach to cake sides. Trim to fit as needed. For tiles at top of pool wall, use knife to cut two strips, 1/2 in. wide x
12 1/4 in. long, and two strips 1/2 in. wide x
18 1/4 in. long. Score tile lines as above and attach to cake. Trim to fit. Reserve remaining fondant.
Use brush and white Pearl Dust/lemon extract mixture to paint tile.