First of all, the Concept Car video was done in ZBrush 3.5R2 and you are probably using ZBrush 4. Quite a few things were changed in ZBrush 4. You have to keep that in mind. I’ve noticed this confuses a lot of people just starting out in ZBrush that are following tutorials.
Quadrilater? First time I have heard a polygon called a quadrilater.
Next, there was one thing in the Concept Car video that puzzled me also. How he could be painting a freehand stroke with the layer brush when he had DragRect stroke selected in the Stroke palette. Then again, it was Pixolator who was doing it :lol: .
You don’t have to use the Layer brush to paint like he did. Using the ‘Pen A’ brush will give you same results he was getting.