Fiberglass and resin in general, there´s a lot of tutorials on youtube of how to use them . Those are difficult materials but the results can take a very professional look (not in my case xD). I´m still amazed and wondering how you made the animal, has an internal metal structure to withstand the weight?
There´s... a person in there? OoO wow.. i´m astonished because it doesn´t seem to be a person shape, and that´s a very good point for the prop . Anyway, thank you for your answers! if you need some fiberglass tips next time just ask, I´ll help in what I can.