Was the butterfly expensive? If not, I would get 2 more (exactly the same) for the whole wall.

I don't think you need more pillows but a great throw at the foot of the bed, like butterfly wings, would be great

Also, I think you need to lift up your bed so the mattress meets the bottom of the headboard. You cna find things on Amazon to do that. Or find a way to lower the headboard.

Agree with above ^^^ a throw at the bottom to pull in the other colors will help a lot. You’ve done a good job so far. Raising the mattress so it is a few inches above the bottom of the headboard will make it more comfortable for you, as well as filling the gap. I’m not sure I’d add any more pillows. Sometimes adding mirrors behind the lamps helps expand the space, double the light and give the feeling that there are windows. Not necessary, but something to fill space that isn’t art.

ok -- maybe one more pillow

French Butterfly Linen Throw Pillow · More Info

I love what you have done already! What a beautiful soft, feminine space! I think in the vein of that same vibe I would add a chandelier to really finish it without adding any real clutter. It’s too sophisticated for the small current fixture. Gorgeous!

I think the room needs more color. I suggest adding it with curtains. I would also change the lighting and lift the bed.