How can I properly apply caulk to my shower to prevent leaks and maintain a waterproof seal?

To properly apply caulk to your shower, first clean the area thoroughly and remove any old caulk. Use a waterproof silicone caulk and apply it in a continuous bead along the seam between the shower and the wall or floor. Smooth the caulk with a wet finger or caulk tool to ensure a tight seal. Allow the caulk to dry completely before using the shower to prevent leaks and maintain a waterproof seal.