If you plan to install a patio or deck at some point, sketch it in and plant around it, then do the building as time and money allow. Remember that the key to a successful garden is healthy soil. Be sure to evaluate your soil before placing the first plant. Most new root growth takes place in the top six inches of soil, so add soil amendments only to that depth. Plant trees and turf first, then shrubs, then smaller plants.
Flowers are only one way of generating excitement in the landscape.
You can also create attractive plantings by mixing foliage of interesting textures and colors. Consider the light and water needs of plants you group together. When planting a garden bed, consider the height plants will be when they are mature. Put taller plants in the back, shorter plants up front. A thoughtfully planned landscape will have color all year around.