Wow winner to me is the colour changing LED lighting, sets the mood for whatever you are doing: games, studying etc

Having the pictures propped on the top of the headboard is an accident waiting to happen. One slight movement of the headboard, and down they come...on your head. Hang them on the wall! No headache then for sure.

I would change the curtains to pale, at the moment they seem to divide your attention between the bed and the window area. Natural or white linen bedding would be lovely and then a chunky knit throw in a beautiful warm mustard or burnt orange. I would consider changing your bedside table handles to something trendy in a timber to match the blind and also bring in a few small timber accents, a bowl, photo frame etc on the bedside tables. And then go crazy on a mix of cushions. Also look up how to style bed cushions to give you an idea of what you might like.

The only real problem here is that your jewel accent colours are floating in a sea of greige. It needs a bridging accessory to tie the different colours into that neutral background which is swamping it. Put a russet throw on that couch and watch it suddenly morph into a harmonious scheme. You have to balance not just the scheme but the weight of the colours too. The weight is determined by volume as well as hue. This is a pale grey living room (walls, couch & carpet) with dark/bright accents. They made those accents work by putting an enormous navy rug in there to tie it all in. The colour intensity difference is fine because of the way it's balanced by volume. At the moment your couch, walls, artwork and carpet are all the same colour, just at different levels of intensity. There is no contrast in that room. You suddenly throw three tiny cushions in there and they can't balance out the miles of greige. A throw or rug in same orange as that floral cushion is needed to put more weight into the accent colours by upping the volume of it. The killjoy in your bedroom are the magnolia walls. You need to increase the intensity of the walls. So either go a much darker shade of magnolia (khaki Taubmans), or some other mid tone colour. People get really scared of intense colour on walls, why I have no idea. Especially in a bedroom, where you want it to feel cosy, a mid tone colour can really work to create mood. You only spend night time in a bedroom and go there to sleep. A darker room colour is perfect for that. You don't need to spend hours a day in there and you want a colour that pacifies and induces rest. In your particular bedroom I would choose either Wet Lichen or Silver Willow (Taubmans) for your walls. They are grey greens in mid tone that will harmonise both with the deep bottle green and the wood colour of your furniture. Don't be afraid of how dark they appear. Wood furniture has a habit of swallowing colour. You will find the furnished room will not look half as dark as you expect. Your bottle green bed throw actually contains a prussian blue base which lends it a more natural and greyish cast. I would also change out your lamps for something quite dark, like a chocolate to complete the look.