Visual Indicators for editable content and non editable content

Brief Product Description: So I have been working on a digital project where the product is an online presentation software where the user(Teacher) has presentation slides to select and conducts presentations to the students.

Problem: The user buys slides from the marketplace which will be added to the library of the software. The user must be able to distinguish between Guides(collection of slides)bought from the marketplace and his custom-made slides because the slides in the guides can be dragged and dropped when making a custom guide but the content in them cannot be edited and the user must know this. So I was thinking a kind of indicator which helps user to see that. But dont know if this is the best way. Please help. Thank youenter image description here