First, use up all your possible opportunities for vertical matches all along the earth tiles to make them fall. Afterwards, try to make the most favorable matches, creating and exploding power-ups. After the field is clear, make matches next to the exit points in the middle part of the field. This will lead to auto-matches above, and lemonade glasses will travel through the portals faster. Remember that you need to collect 4 lemonades but only 2 can be present on the field at the same time.