The ornamental design for a cardcover, as shown and described.
FIG. 1 is a perspective view of the first embodiment of the card cover showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view a second embodiment of the card cover;
FIG. 9 is a front view thereof;
FIG. 10 is a back view thereof;
FIG. 11 is a left-side view thereof;
FIG. 12 is a right-side view thereof;
FIG. 13 is a top view thereof; and,
FIG. 14 is a bottom view thereof.
The broken line showing of portions of the card cover is included for the purpose of illustrating environmental structure and forms no part of the claimed design.