@zacha_sollo74 to put the thumbnail into your original project, right click on the backdrop of this thumbnail, and press export and put it into a file or something and then open your original project and go to backdrops, press the add a backdrop button and press the folder looking button and look for your thumbnail in the file you put it in
if you see this except for @zacha_sollo74 this is just a thumbnail for zach's fast food clicker