I have some tubed acrylic paints (I went to an art college). I'm wondering what your guys' suggestions are Rattle Can over free hand paint brush, etc or a combination of both paintbrush and rattle cans. My other question was whether or not you can age/ fade paint by leaving it in the sun or can you wipe something on it to rapidly age the paint and get it faded out and worn almost naturally? All of my kit is in steel, do I need to put a clear coat sealant on it after I'm done to protect my work or does that leave it with a fake shine/luster?