use wood to get the basic shape, then lay out, and staple any kind of felt like material to it,child/baby blanket type material at wal-mart,,,reason being,,its soft and stretches,and gives u a nice basic shape,,after u got the shape u want,,lay out fiberglass mat and pour resin and spread evenly thruout,,,,after that,,its all bout sanding sanding sanding,,and then primer, sand ,primer,sand,,and so on,,,,then, u are ready for you paint
hope this helps