The ornamental design for an embroideryencasement, as shown and described.
FIG. 1 is a perspective view of an embroidery encasement;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a third side view thereof;
FIG. 7 is fourth side view thereof; and,
FIG. 8 is an alternative perspective bottom view thereof.
The broken lines depict portions of environment that form no part of the claimed design. The dash dot lines depict boundary lines of the claimed design. The drawings contain break lines. The portion between the break lines forms no part of the claimed design.