Here's how to add a shake effect in Premiere Pro. Step 1: Select your clip in the timeline and go to Effects. Step 2: Search for "Transform" and apply it to your clip. Step 3: In Effect Controls, enable keyframes for both Skew and Skew Axis. Step 4: Set initial Skew value to 3. Step 5: Move forward a few seconds in your timeline. Step 6: Increase Skew Axis to a high value like 20X. Your shake effect is now complete. The combination of skew and axis changes creates dynamic camera shake movement. Adjust the values and timing for more intense or subtle shaking effects.