That is looking very good, Doug. Almost makes me want to go on to my 1/700 Missouri--almost! I'm filled to the gills with Measure 32 right now.
As for weathering,
-after I get the basic color on, I spray a clear coat; I've been using Floquil Flat for years, since it has a nice smooth finish, but that's out of production now (thanks, Testors); but I still have a few bottles; I'm going to have to find a substitute in the near future; probably a semi-matte
-after the clear coat is dry, about a day, I apply a lightened version of the base color; sometimes I dry-brush it; sometimes I use a toothpick, maybe even a brush (but that's a little harder to control); I use this to pick out the raised details
-sometimes I apply a light second coat of the clear coat to seal this;
-then I apply a thin pinwash of acrylic paint to bring out the shadows; I apply this (for example) around liferafts, into and around panel lines, portholes, etc., etc.--wherever it seems appropriate;
-for this, I simply use acrylic craft paints, and pick a color that comes close to the base; for instance, I used straight black and a dark blue on North Carolina, depending on the base color; I've heard some modelers have used a deep purple for the wash on certain US Navy grayish-bluish colors; I haven't tried that myself; a thin acrylic wash over a smooth surface can often be cleaned up with a dry cotton swab
I'm no expert on weathering, but I used to paint military miniatures, and this is sort of an adaptation of highlights and shading that miniature painters used
Continued good luck with Missouri. She really is looking fine!