Make iMovie folder created on iOS available on Mac

Hi,

I was experimenting with iMovie on my iPhone trying to link together some footage I took of my kids. I exported the movie to iCloud drive and I can see i now have a iMovie folder with the .iMovieMobile file in it. When I go into my iMac to my MBA I do not see the folder in the iCloud Drive. Is there something I need to do to make them sync up?

Thanks

Andy