I don't consider my moulding capabilities a talent - but we're really good at the finishing part of the job where you can hide errors. After you've installed whatever you're working on, you should fill in all the gaps and nail marks with a paintable caulk (or something comparable) before painting the final product. We still have to do this step, but it's coming along.
The square rosettes with fluted casings are seen in a few other places of the house where the trim appears to be original. We like the traditional, yet geometric look.
Before:
After:
Dealing with a 1.5" floor height change is a pain. We built this trim piece out of two threshold step-up pieces stacked and secured.