The ornamental design for a crownpanel, as shown and described.
FIG. 1 is a front perspective view of the crown panel showing my design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front perspective view of a cap incorporating my design.
The broken lines in FIG. 8 are for the purpose of illustrating the environment in which the design is associated and form no part of the claimed design.