Try not to interrupt the view of various planes in a room (floor, walls, ceiling). Place furniture so that you can see past it, into the next space and the room will seem larger.
Make the entry to your home welcoming, no matter how small the space. It sets the mood for the rest of the place.
A small space requires that you live surrounded only by what is useful and beautiful. There is purity to this way of living.
Tuck canister up lights in the corners of rooms to eliminate dark spots and make the room glow.