Move the sectional away from the back wall. Give it some space to breathe and position some type of arched floor lamp to brighten that dim corner
I'd add drapery panels to the windows to accentuate the height of the room
I'd turn the mirror so that it's vertical over the FP and add sconces
Get a decent-sized tree for the room
Select a larger coffee table. You have a $$$ sectional and a $ coffee table.
Don't paint the fireplace but eliminate the brass.
That orange rug wouldn't be my first choice for this room but I don't know how much $$$ you have invested in it.
I'd look for a more 70s style coffee table. Lower and SLEEK!
Q
I like the wooden top and painted bottom
Q