After constructing my model space. I opened a new layout and inserted the viewport.  I then scaled the drawing to 1/4"=1'.  But now when I try to draw something in this layout the scaling is off by a factor of 12.  How do I get the scaling of my line to match the scaling of the drawing?  Would really appreciate some help.

It is actually off by a factor of 48. I have my viewport scale set at 1/4"=1' (factor of 4) and the factor of inches to feet is 12. 12 x 4=48.  I don't know how to fix this though. My drawing units are already ajusted to architectual inches.  How do you adjust the viewport drawing scale?

My model space is drawn at 1 to 1 scale.  The problem is, I want to draw on my viewport ( I know the tutorial says not to ). I'm basically trying to use the viewport like you would use tracing paper.