@frikkr giving great advice here. I too use the “spare” approach thought I usually call it “utitly”. Spare makes more sense ha.
And I apologize @nickardiamond because I don’t think I was clear in the course about the importance of incremental saves. If you want to provide a download link to your .blend I could look for a way to fix the mirrored lock without having to redo everything. NOTE: The best way to share .blend files here is by uploading to dropbox or equivalent file hosting service and posting a download link.