Stop separating the outside of your dwelling from the inside of your house, try to think of your premises as all one place. Look at your outdoor space, look at your yard and take inventory of the things you have naturally in the space. What has mother nature already provided for you? Hopefully you possess some kind of natural elements that can be the focal point within your new outdoor living room such as a large tree, a hedgerow, a great slope, or a beautiful view. There could possibly be other qualities you can start with, such as a lovely angle of morning sun, maybe a nice brick wall on a single side creating a microclimate, or even an interesting urban view of some kind, though in urban locations, your yard may well be a barren rectangle, with nothing in it however, some weeds and dirt.