Locate the "Your Design Here" or UV map layer. Place your design (with or without a transparent background) on this 2D canvas.
The "Replace Smart Mockup" button. If you start with a cup template, but decide you want a bottle, you don't restart. You click the new mockup, and the plugin asks: "Keep current art?" Click yes. Your logo instantly re-maps from the cylinder to the bottle shape.
Launch Photoshop and open a compatible Freepik PSD mockup.