How can I make footprints on my game?

I am new to scripting but excellent builder and I would like some help so as to make footprints appear when your character walks and if its possible make it when a item is moving it too leaves a imprint such, i am making a snowy based game and i would like to make it as realistic as possible and i am gonna have snowboards and skis, i would also like to make it so the snowboards leave behind a track that soon disappears --as i said i am new to scripting and this is something i can't model so, I'm sorry if this looks like a request to you but this will help a lot :/