[john70t]

The back of the pic looks pitch-black. Well established trees.
Nice.
I assume the rest of the yard is the same.

Assuming the marked 11' section is the front entrance, not driveway, there are two ways to go:
1). Hide the entrance:
Continue the arborvite line along the sidewalk, and install a trellis with a swing gate.
Fill with medium or large plants.
There might even be enough room for a seating area with a two seat swing in there with lights etc.
Tighten the area. Expand your personal space.
Present a blocked off wall to the street.

2). Accentuate and expand the entrance:
Colorful red plants on both sides of the walkway in a 24" bed of peastone(small), riverrock(larger), or other bed. There are a lot of choices.
Border is low to the ground to widen the space to the eye, or slightly raised which could become a trip hazard.
Ground cover with something fancy in the left corner to catch the eye, like a 6' variegated shrub.