ahh get to Placing some Points!!!!!! you mirror the path, and say ahhhh get to placing some points! I learned nothing from this as you just jumped in a millisecond and completely passed how to place points or understand this tool. with the magic of ahhhh get to placing some points, Ive shouted it at my monitor nine times and still no points are placed, Ive even turned on voice activation and it still doesn't work! and tips :) love the tut BTW 

I feel Like an idiot as you just hit edit mode and the points are there, But for all you other people who will also hit this Ahhhhh get to placing some points!!!   just hit TAB 

Really nice SciFi "door"* model 👍! I just can't find here any project file 🤔🕵️‍♂️.

* or whatever you like to call it 😉

How are you snapping the rotation of the new loop cuts you make?  Specifically that loop cut along the top of the frame. It was at a slight angle but you snapped it into an upright 90 degree angle without distorting the mesh. Did you size it down as well? There is a video edit cut right there so I can't catch all of the key strokes. Time stamp is 4:30.

Hey, i saw you dind't use Angle constraints with C, someone at the comments already suggested this.
When i start concepting i also use planes with the knife tool. In addition i also use custom transform orientations (the + mark) to make 30 and 60degrees angle variants, so you don't have to manually rotate along a vertex and having to type in everything.
Plus i use Tiny-CAD addon all the time for these angled-lines. You'll find the VTX|Auto feature very usefull, as it extends 2 edges and generates a vertex to the point where the edges would meet (edges should be allinged on the same axis though).