lines showing up on elevation above cantilever

[SHCanada2]

I have this firepace setup as its own little room with 60" room hieght. The wall that delineates it is a pony wall with room divider on the bottom and normal stuccp 6 wall on top.

 

 but outside is showing studs or something:

 

inside walls are no room definition

 

framing seems to look ok, more or less:

 

is there a better way toi do this?

 

 

 

694 Muirfield Cr - fe (6).zip