How to use: Open zip, you will find the four files you need. Click on the StarMade launcher, click "Start Game" to get to the Connection Setup. Find "Mods" on the menu bar in the upper right, click it and find "Create Custom Skin" in the drop down menu. Enter the files correctly as labeled.
Forum post can be found here: http://starmadedock.net/threads/commander-shepard-femshep.273/