Hello kellyi. The living room needs straight, long drapes in a simple pattern, I think. No swags, no tie-backs, no extra anything. I'd look for something with a light, off-white background as the room is a bit heavy with brown, and perhaps a geometric pattern that introduces your favourite colour. It could happily be green, but the room is so neutral it could be anything. Pick up that colour in a couple of throw pillows, which could also be patterned, or plain. On the lighting I think you could probably get better advice from someone else. But I'd also like to suggest big art for your fireplace to hang just a few inches above the mantlepiece. Again something modern, light and bright. Preferably with a touch of brown in it but other colours predominating -- including the curtain colour. I think these are both charming and cheerful, but of course nothing is more about your personal taste than choosing a painting. These are on etsy.com, in the landscapes section.

Timber tones, but take a photo of your samples and put it up in comments. Also a picture of your kitchen.

I would choose a grey sofa, but really any colour would look great, tan leather, white , depends what style you are looking for, could be ultra glamorous or a casual boho luxe , love those colours throughout, could look gorgeous

You can’t go wrong with white. I always suggest match to the wall colour or the trim colour.