It’s easy.

1. Open in Photoshop

My mockups are built for Adobe Photoshop. Open one.

2. Add your Artwork

In the layer panel, you should see a layer called “Replace [Double Click Thumbnail]”. Double-clicking the thumbnail will open a new tab inside of Photoshop.

3. Drag & Drop

Simply save the smart object document and then close out of it and return to the mockup document.

4. Voila!

Your artwork should be perfectly placed.