IMHO - No to the green ottoman. The new lamps are an improvement and for me they’re 100% better than the sparkly ones you posted earlier!
It’s a great room, lovely size and with ensuite, that’s the most important thing. Anything else you do is just personal taste and as this thread has shown, everyone has different ideas about what looks nice.
The noticeable thing is the scale as others have said. Go bold with pictures, storage, headboard etc or zone with colours on walls - eg something behind the the dressing table to make it stand out. I usually start with a duvet cover or cushion in a pattern I love, then choose other plain or striped/more subtle patterned items based on the colours in that. You mention your other more colourful duvet cover. Maybe use that as inspiration for a wall colour or for something other than red to accent with?
As an example - and one I don’t expect others to love, as it’s very ‘me’! - I loved this cushion so have chosen colours from it for throws, sofa, walls etc. for my sitting room. Still got lots to do, and lots of boxes to unpack, but I have a vision which started from one item and has informed all the other choices so far! The olive green and plum etc would be an unusual choice for most, but I’m hoping the cushions with all of those colours on will bring it all together.
For me decorating isn’t about being on trend or something everyone likes. It’s bringing together things I love in way that makes me feel happy to be in that space. The young ‘uns call it dopamine decor. It’s just decor!