The ornamental design for a shoe upper, as shown and described.
FIG. 1 is a front lateral side perspective view of a shoe upper showing my new design;
FIG. 2 is a lateral side view thereof; and,
FIG. 3 is a rear lateral side perspective view thereof.
The long and short broken lines are boundary lines, which define the bounds of the claimed design. These boundaries do not exist in reality in the article embodying the design. It is understood that the claimed design extends to these boundaries but does not include the boundaries.
The evenly-spaced broken lines shown in the drawings are directed to environment, are for informational purposes only, and form no part of the claimed design.