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 having an ankle collar with a knitted appearance;
FIG. 5 is a side view thereof; and,
FIG. 6 is a rear perspective thereof.
The broken lines immediately adjacent to the shaded area represent unclaimed boundaries of the design. The broken lines within the shaded areas show an eyelet and a portion of the side panel that form no part of the claimed design. The broken lines showing the remainder of the shoe illustrate the article and form no part of the claimed design.