Very good first attempts. A couple of observations and please bear in mind I know next to nothing about digital negatives.
It seems to me your curves are a little bit flat, the train wheel specially needed a more contrasty negative.
I have not used Dr. Ware's process, but from what I understand it is similar to kallitype, why are you using tween? tween is a surfactant that makes the solution absorb more into the paper, from my experience with kallitypes this is not a good thing, in fact why dont you try sizing the paper? if anything stop using tween, I think you will see better results.
All in all, a very good beguinning effort, hang in there....