Door shelf

FIG. 1 is a perspective view of a door shelf showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a left end elevational view thereof;

FIG. 6 is a back elevational view thereof; and,

FIG. 7 is bottom plan view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design.