How can I bring more green and white/ivory into a room?

[Wizzoh]

1 dark green wall, 3 white. All woodwork white.

Dark tan couch. Medium warm wooden flooring.

I have burnt orange cushions and burnt orange curtains.

I can't have a rug to due a pissy puppy.

I don't know how to bring it together more?

I can't have anymore cushions and for me it's usually the rug that ties the room together (man)

What decor can I use to make it more homely?

Maybe some plants?

Add some cushions that have green in them, or a combination of colours. Add a throw for the couch.

Add plants (if OK with puppy!)

What’s on your walls - painting, photos?

paintings on the wall

Lamp, light shade, pictures on walls.
Shelves with plants, books and photo frames.

Pot plants

Have a look at the 60-30-10 theory.