The ornamental design for a lacrossestickheadcover, as shown and described.
FIG. 1 is a front view thereof;
FIG. 2 is a back view thereof; and,
FIG. 3 is a left side view thereof, with the right side being a minor image thereof.
The broken away symbols in the drawings indicate the appearance of any portion of the article between the break lines forms no part of the claimed design.