The goal for this level is to score 500,000 points.
The best way to do this is keep getting free spins, as each free spin creates a points multiplier.
Work from the outside in matching the edge gems first. Save wild gems for last. If you get stuck after getting to a decent multiplier try using a spin saver to keep it going.
Dev tip: There is no trick to pipes dropping. They randomly drop every 1 or 2 turns and restrict the play area over time. Rack up your free spin multipliers early on whilst you have plenty of space on the board!