FIG. 1 is a frontal perspective view of a first preferred embodiment of a side element of a shoe upper showing my new design;

FIG. 2 is a side elevational view of the side element of a shoe upper shown in FIG. 1;

FIG. 3 is a front elevational view of the side element of a shoe upper shown in FIG. 1;

FIG. 4 is a rear elevatiional view of the side element of a shoe upper shown in FIG. 1;

FIG. 5 is a top plan view of the side element of a shoe upper shown in FIG. 1;

FIG. 6 is a frontal perspective view of a second preferred embodiment of a side element of a shoe upper showing my new design;

FIG. 7 is a side elevational view of the side element of a shoe upper shown in FIG. 6;

FIG. 8 is a front elevational view of the side element of a shoe upper shown in FIG. 6;

FIG. 9 is a rear elevational view of the side element of a shoe upper shown in FIG. 6; and,

FIG. 10 is a top plan view of the side element of a shoe upper shown in FIG. 6.

The broken line showings of the internal crescent shapes in FIG. 6-10 and of the remainder of the shoe in all of the figures are for illustration purposes only and form no part of the claimed design.