After filling in the hollow part of the lush cast with expanding foam, I glued the resin lion head to some cardstock. Then I used craft foam to build up the outside edge of what would become the knee plate of the leg armor. Next, I'll cover the foam with wonderflex so it can be attached to the wonderflex greave.
And this is the other side of my first slush cast pull. Looks a lot better, huh? Still needs some finishing work, but it is usable This is much lighter than the solid casting I made originally. I think I need to add some expanding foam in the back to support the thinner portions.