I have a 1/72 revell space shuttle model. There are two things i was wanting to get ideas for. The first is the best or most realistic way to make my shuttle look weathered. I have hand painted most of the detail and would like to try and stay away from decals because of this. The second thing is the cargo bay. I would like to add some type of material to it that will make it look like the real padding that is in the cargo bay. Thanks for any hints tips, or suggestions you may be willing to pass my way!