Your results look pretty good. As mentioned above you need a little more contrast so the blacks print black and the whites stay white. You can get this with a harder filter if you are using variable contrast VC paper, or a harder grade of paper. You can also develop your film for a bit longer so it has more contrast. If when the film base is printing black you don't see much detail in the shadow areas you should add exposure by cutting the speed of the film down on the camera or meter. For example try 200 instead of 400 for Tri-X. You are very close, and i bet with a few changes you can get good prints from that roll.