An ornamentaldesign for a shower valve trim package design, as shown and described.
FIG. 1 is a front view of a shower valve trim package
FIG. 2 is a top view thereof
FIG. 3 is a left view thereof
FIG. 4 is a right view thereof
FIG. 5 is a perspective view thereof
FIG. 6 is another perspective view thereof; and,
FIG. 7 is yet another perspective view thereof.
The broken lines shown in the drawings showing a hose represent unclaimed portions of the shower valve trim package and form no part of the claimed design thereof.