heres a tutorial on how to make a storm shield from green stuff. First off the material you will need:
a round cylinder like a pen or round bit of wood
1mm thick plasticard
old paint pot or small tube
vaseline (petroleum jelly)
size 6 soft clay shaper
to start off you need to cut 2 thin strips of 1mm plasticard that are a bit longer than the size of the storm shield and glue them to a scarp piece of plasticard making sure the distance between the two pieces are just bigger than the width of the shield you are making.
next is to mix up some green stuff. I like using muliput in with my green stuff with a 1:1 mix because you can sand it once it has hardened.
Next you put some vaseline on the plasticard to stop your green stuff from sticking to it, then place your green stuff inbetween the two plastic strips and using your round cylinder flatten it out so that it fills the space between the two strips. The two strips will give you the thickness of the shield.
Once I was happy with the green stuff being flat I trimmed off the excess to make it more rectangle and used the clay shaper to smooth it out.
carefully lifting up the green stuff rectangle I put it on the paint pot to give it more shape and left it to cure. I've used an old vallejo pot as this is perfect for giving your shield the roundness.
When the green stuff cured i took it off the bottle and drew the design I wanted to make. When I was happy with the design I used a sharp knife to cut the rough shape out then using the emery board I sanded the sides till I got the desired shape.After doing this I made up some more green stuff and repeated the steps before to get it flat. I then cut a thin strip that would fit round the arm of the model that the storm shield was going on. I then glued the shield onto the arm and picked up the small strip of green stuff, fixing it round the arm of the model using the clay shaper.
hope this helps and if you have any questions just ask and i'll help if I can