A few other tips that have worked for me (indoors):
- try to brace yourself against a door frame or wall corner; even sitting in a chair can help, and you may be able to brace your elbows against your knees or the furniture
- Relax! I find that the harder I concentrate on staying absolutely still, the more likely I am to start to get "microtremors" in my hands from the muscles tensing up
- try to time the shot between breaths, when you are fully exhaled. I don't recommend holding your breath as I've found this can make my heart beat harder - no joke, it's visible through the VF using a 50mm lens (maybe there's something wrong with me!)
- just like the advice for guns, squeeze the shutter release, don't "push" it. Even with my DSLRs and their electronic releases I find that a continuous stroke, not releasing the pressure until the release button travel has bottomed out and the shot is over, works best
BTW I agree with the other comments about that kitchen shot - it's great, and the combination of sharpness and motion blur makes a very compelling image.
B&W film has a lot of exposure latitude. Unless you are committed to a particular ISO100 emulsion maybe you could experiment with some 400-speed stuff and see how it goes? I find that with bodies that top out at 1/1000 or so, the use of a contrast filter outdoors cuts the film speed to an effective ISO100-160, so there's no need to stop down excessively, and you can always keep a deep 3x filter like R or X1 on hand to get into the ISO50 range and shoot almost wide open in daylight if the situation calls for it.
Regards,
Scott