So iv been building a few jumps and i made them mostly out of some quite nice well packing topsoil and then coated them in loam and packed them smooth but now I want to make them bigger should i make the rest completely out of clay ( iv got limited resources) or put more topsoil on and then coat in clay. Also am i doing it right by building up a pile of soul packing it then watering it then coating it in dry dirt then leaving to dry then packing then repeating and finally coating in clay and wetting that