Not much you can do about the layout but I dislike having a separate kitchen and that there’s no hallway so you’re coming into the lounge apart from the lobby bit.
The zigzag wallpaper is not to my taste and it’s distracting me from seeing the space, rather than enhancing the room. I’d be tempted to paint over it in a neutral colour.
Take the telly out of your bedroom. It looks like it’s taking up loads of space and distracts from making it look like a calm relaxing space.
Is the third bedroom actually set up as a bedroom? It seems to just have a massive leather chair and mirror wardrobe in it? That could be presented much better.
As others have said look a bit more closely at the stuff you have out. Look at how the show homes present, they have a little bit of stuff out that brings colour or indicates a lifestyle but no more.