Stop separating the outside of your dwelling from the inside of your house, try to think of your home as all one place. Look at your outdoor area, look at your yard and take inventory of the you have naturally in the space. What has mother nature already provided for you? Hopefully you might have some kind of natural elements that can be the focal point within your new outdoor living room area such as a large tree, a hedgerow, a great slope, or a beautiful view. In urban locations, your yard could be a barren rectangle, with nothing on it but some dirt and weeds, but there could be other qualities you could 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.