That third window is totally appropriate for a Contemporary style home with vaulted ceilings & a fireplace that is not centered.

Thank you for showing me this that definitely helps me re-focus my thoughts.

What kind of foyer do you have? I'm thinking that bringing that recessed entry to the front would help in several ways. You can do it with color on the door too.

The house would be very attractive if you put some water on the grass and plant some shrubs that flower (azaleas work in many areas). You could add a decorative item to the exterior wall of the chimney, if desired. And plant something special in the empty planting ring. A slightly darker paint color/stain on the wood trim and front door would add definition.

This mid-century modern (MCM), is trying to masquerade as a house of the 1980's. Play up the non-brick siding with a contrasting color. Do not try to match the brick color, I think a dark brown with some black in it will give the house a more sophisticated feel. A charcoal grey would look good too. Curb appeal will be enhanced by giving the yard some fertilizer to thicken and improve the color of the grass. If the grass is bluegrass, consider seeding some fescue into it, so it tolerates drought better. The recessed entry should have a bright color to pull your attention to it. I would paint the wall and garage passage door the same dark color as the other woods on the house, and go bright with a turquoise color on the wall with the little double windows. Paint the window frames the same color. . For the door itself, orange, red, bright green, vivid tones, and I would paint the door frame in the door color, to make it more obvious where the front door is. Add 1 or 2 dramatic large pots or a place to sit. I'm not really loving the above ground timber circle. If you want to add interest in the front yard, I would put an evergreen spreading yew in the center, and fill in with annuals until the yew has filled out . Yews grow fairly fast, which is one of the reasons I chose that shrub. It is a deep green to contrast with the lawn. Prune to keep it thick!