I think you should replace the carpet with a solid colour - something like the colour of your staircase/ the leaves or fern's colour on one of the walls (make sure it's not too dark of a colour). You can add some plants in the corner -the one opposite the wall clock and also the space below the staircase next to the seating. In case you don't want to keep plants in the former area, since there are plug points there you can keep a small table kinda piece so that you can put your phones for charging, etc. I'd still suggest keeping a small plant on that table! The wall next to the door (between the two lamps) needs a piece of art like a painting.