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 rear perspective view thereof; and,
FIG. 3 is a lateral side view thereof.
The broken line showing of the two tear drop shaped lacing element, the diamond shaped element and the two large patches inside of the claimed area is for environmental purposes only, and forms no part of the claimed design. The broken line showing that is immediately adjacent to the shaded area represents an unclaimed boundary of the design. The broken showing of the remainder of the shoe is for environmental purposes only and forms no part of the claimed design.