This is a nice combination of hardscaping and landscaping. 
       Notice the combination of a high percentage of evergreens, some are gold varigated to give year round color with a splash of annual flowers. The retention wall gives another level where you can put more frontage color with small shrubs where you can add more low lying flowers for additional frontage color. The reddish maple was a good color tree to keep with the color scheme of the house and hardscaping which is the retention wall, stairs, and paver walkway. The use of a white flowering non fruit bearing crab tree or a snow fountain cherry would have given a nice bright neutral color contrast in the place of the second deciduous tree in front of the window on the left.