from all of the skins i have, i would just edit the FTTP marine with old FTTP art style (black outlines) to have no gloves and green armor instead without a helmet and bandana on his forehead.
or I would just use my first skin
https://i.imgur.com/jLsbVw8.png and for sure polish it first
properly if there was a place like level editor where I can be a skin maker and having a skin maker role for publishing skin and sharing it for others then all of the good skins i made would be published on PB3