Portion of a shoe upper

FIG. 1 is a side perspective view of a portion of a shoe upper showing my new design;

FIG. 2 is a side view of one side thereof;

FIG. 3 is a side view of another side thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a front view thereof.

The broken line showing of the fastening elements and the remainder of the shoe are for illustrative purposes only and form no part of the claimed design. The depicted contrast in shading represents a contrast in appearance, for example, by color, texture, and/or material.