Fan blade accessory

[0001]FIG. 1 is a top perspective view of my new design for a fan blade accessory;

[0002]FIG. 2 is a left side view thereof;

[0003]FIG. 3 if a right side view thereof;

[0004]FIG. 4 is a rear view thereof;

[0005]FIG. 5 is a front view thereof;

[0006]FIG. 6 is a top view thereof; and,

[0007]FIG. 7 is a bottom view thereof.

[0008]The broken lines show portions of the fan blade accessory that form no part of the claimed design.