How can I improve my piano playing technique to master the intricate nuances of the squiggly line in the musical score?

To master the intricate nuances of the squiggly line in the musical score, focus on improving your piano playing technique through consistent practice, paying attention to details like hand positioning, finger strength, and dynamics. Work on developing a sensitive touch and control over the keys to accurately interpret the nuances indicated in the score. Additionally, seek guidance from a skilled piano teacher to provide feedback and guidance on refining your technique.