Just like the pillow humping, place it under your vagina area, more to the top towards the clit and hump the stuffed animal like you have never humped before. Trust me, you'll like it!
TIP:
its a fast and easy way to cum, but you can only orgasim if you stick your finger down there too and have the arm of the stuffed bear or whatever underneath ur clit while ur rubbin ur finger on it