The ornamental design for a headlightfaceplate, as shown and described.
FIG. 1 is a perspective view of a headlight face plate showing our design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left elevational view thereof; and,
FIG. 7 is a right elevational view thereof.
The dash-dash broken lines shown in the drawings illustrate environment and form no part of the claimed design. The dash-dot-dash broken lines define the bounds of the claimed design and form no part thereof.