The key to raw denim is to wear them in. You want to wear them long enough so that individual marks such as honeycombs and whiskers are prominently shaped and molded into your raw jeans. Typically, this process takes at least 6 months. During the 6 months process, there are ways to keep your jeans clean, such as mixing a spray bottle with some vodka and water. Spraying this on kills bacteria and gets rid of odor. I haven't tried putting it in the freezer, but if you could fit it inside a bag or something, that's worth a try. You also want to wear your jeans as much as possible while breaking them in. After a year or so of wearing them, you'll have a pretty nice looking pair of jeans.
As for washing them, just throw them in the washing machine and hang dry. Don't worry about the wrinkles, when you hang dry them because they work themselves out as you wear them.