Create Digital Product Mockups in Canva | How to Use Mockups App in Canva

Regarding copyright issues, can you use Canva pro mockups for digital downloads/printables or do they have to be free? For example, you can sell designs as pdf or jpg printables only if you use free elements. Is there a restriction on the canva pro mockups when you want to advertise these designs?

How do i make my own smart mockps from my own images? (Example a T-shirt where the whole shirt is turned into a drag and drop frame like photoshop smart object?)

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