[Dragonomine]

I have used Lauriebeast's method too, several times,with good results but not over bubble wrap, or packing wrap, My idea for that would be to make the shape you want, then use duct tape over the plastic to seal it, mache will stick and work over duct tape, whether your use paper stips or cellulay, although celluclay would have to be put on thinly ,not to change the shape alot. if you have alot of body parts you might want to, for cost effectiveness, strip mache, or use paper towel for mache, to give a smoother surface, then paint it with acrylics. Am I right in that you have the parts already made with the shipping wrap?

This is the technique I would use as well.