FIG. 1 is a front right perspective view of a toilet seat cover showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a top plan elevation view thereof;
FIG. 6 is a bottom plan elevation view thereof;
FIG. 7 is a left side elevation view thereof;
FIG. 8 is a right side elevation view thereof;
FIG. 9 is similar to FIG. 1, but the toilet seat cover in a second state; and,
FIG. 10 is similar to FIG. 1, but the toilet seat cover in a third state.
The broken lines depict portions of the article that form no part of the claimed design.