Instead of using bedside table lamps, hang pendant lights from the ceiling. This creates a vertical line upward and opens the space below, making the room feel lighter, uncluttered and even a bit more styled.
As for lighting, I prefer warm, non-directional dimmable light such as cove light or from under a nightstand, and I hide outlets so the design isn't interrupted. I use artwork as an accessory to complement the overall design. And accessories like a carafe, a tray for jewelry, and books can make it feel more personal.
White reflects maximum light, making any space look bright and welcoming. Even the tiniest, most claustrophobia-inducing rooms will seem more spacious with white walls, ceiling and bedding.
With large furniture taking up floor area in your small bedroom, one great trick for creating space and giving the room an airier look is to float some pieces on a wall. This arrangement makes the furniture seem to merge into the wall, giving your room a more streamlined appearance.