There are three main objectives you need to consider and as you progress through the game and reach the later stages the game challenges you with two and even three of these objectives at the same time with only a limited number of moves available to complete the level.
Gathering Pieces
Before you start the level you need to know what type of pieces are needed to complete the objective and then focus your attention on only gathering those pieces which could be leaves, apples, water droplets or something else. While collecting the pieces you need keep an eye out for situations where you can take advantage of any Rainbow Blast power-ups you may have. Also try to create as many Bomb and Dynamite power-ups as possible to trigger bigger explosions so they remove several pieces on the game board and newer pieces fall from the top.
Finding Hidden Gnomes
Gnomes tend to be hidden underneath grassy patches which need to be removed first to get to the gnomes. If it is a grassy tile that is concealing the gnome it can only be removed when you match pieces around it twice. The best way to accomplish this is to make matches of four or more to create explosives like Bombs, Firecrackers and Dynamite and then detonate them one by one until the whole area above the gnome has been removed completely.
Bringing Lemonades Down
Matching 3 or more pieces vertically in the same column the lemonade is placed will enable you to bring it down to the bottom faster.
Tips & Strategy
The video below will show you a few different ways of creating power-ups and an effective strategy that can help you beat even the most difficult levels.