I claim the ornamental design for a shoe upper, as shown and described.
FIG. 1 is a perspective view of a shoe upper showing my new design;
FIG. 2 is an enlarged partial view of FIG. 1 thereof; and,
FIG. 3 is a top plan view of FIG. 2.
The grid pattern schematically depicted in FIGS. 2-3 is continuous throughout the surfaces on which it is shown.
The outermost dot-dashed line in FIG. 1 defines the bounds of the claim, and forms no part thereof. The broken lines in the drawing showing the remainder of the shoe upper in the context of a shoe are for environmental purposes only and form no part of the claimed design.