Dinosaur fossils have always been an object of fascination for Leo and Stella and now they are making their own dinosaur fossils in this How To Make Dinosaur Fossils instructional video. We used some left over plaster of paris and our first attempt at making these DIY dinosaur fossils failed. I think it's because of the Plaster of Paris being old and moisture getting into it. Failing is an important part of learning and with perseverance and being more careful the second time round we managed to get our dino fossils just right!