The ornamental design for a shoe upper, as shown and described.
FIG. 1 is a front and medial view in perspective of a shoe upper showing my new design;
FIG. 2 is a front view of the shoe upper of FIG. 1;
FIG. 3 is a rear view of the shoe upper of FIG. 1;
FIG. 4 is a lateral side view of the shoe upper of FIG. 1;
FIG. 5 is a medial side view of the shoe upper of FIG. 1;
FIG. 6 is a top view of the shoe upper of FIG. 1; and,
FIG. 7 is a bottom view of the shoe upper of FIG. 1.
The shoe upper illustrated is a first embodiment showing a right-footed form of the shoe upper. A second embodiment is for the left-footed form of the shoe upper, which is a mirror image of the right-footed form, is not illustrated. The broken line illustration in the drawings is not part of the claimed design.