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