When you live in a small space it's tempting to squeeze something into every available gap - under the bed, on top of the kitchen units, over the back of the kitchen door. But, if you want to avoid your rooms feeling too cramped, you need to leave space to let them breathe. 

Good legs
Eye up furniture with good legs that allow you to see part of the floor underneath it. Don't take this the wrong way, but you need more than one or two pairs of pins in the bedroom. Your bed, wardrobes, bedside tables should all show a bit of leg, and mind that they are not hidden under skirts either. 

The same goes for the rest of the house too. If it can be raised, raise it. And, don't panic, you can still sneak a bit of storage underneath these pieces of furniture too, just push it to the back or the middle out of eye shot.