I am having a lot of trouble with this and its preventing me from completing the vehicle exercise. My main question is how do you find the midpoint to complete the X? It works on the side with less distortion but when i try to find the other arm, the vertical line comes out slanted, even though I've connected through the midpoints on each side. I cant figure out what i'm measuring wrong

Kitchen is before demo and living room is after. The couch was so frustrating, felt like it looked pretty good only to find the lines didn't go to the vanishing point. Tried to fix it the best I could and think it turned out pretty well. Will also definitely keep up those straight line warmups!

I drew the facial features too compact and need to extend the top of the hair back more

Too skinny.