How do ace a King Lear essay and how do I analyze the play correctly? like how do I know I'm analyzing the play correctly?

There isn't necessarily a correct way to analyze a play. To start, you must understand the play's plot and meaning. Aside from this, your analysis can be about any topic. Often times, analysis' differ based on the person and he/she analyzes it around a specific situation. It just depends on your topic and you can analyze the play and write about what it means to you.