The ornamental design for a shoe upper, as shown and described.
FIG. 1 is a front perspective view of a shoe upper showing my new design;
FIG. 2 is a side view thereof;
FIG. 3 is a rear perspective view thereof;
FIG. 4 is a front perspective view of a shoe upper showing an alternative embodiment of my new design;
FIG. 5 is a side view thereof; and,
FIG. 6 is a rear perspective view thereof.
The broken lines immediately adjacent to the shaded area in FIGS. 1-6 represent unclaimed boundaries of the design. The even-length broken lines in the lower shaded panel in FIGS. 4-6 represent disclaimed stitching that forms no part of the claimed design. The broken lines showing the remainder of the shoe in FIGS. 1-6 are for environmental purposes only and form no part of the claimed design.