Go to app.filmustage.com, and then, from the Project List on the left, in the lower-right corner of the project you want to change a cover picture, select ⚬⚬⚬.

From the list that appears, select Edit Project ✏️.

Select Click to upload 📷 to upload your project’s new cover image.

Select Save.

The App will change your project’s current cover image to the new one.