How To Use Skilled workman In A Sentence

A skilled workman, Paddy was always working with his hands at home or with the neighbours.
A third said that they had asked for their parents' help specifically to avoid the costs of hiring a skilled workman. Times, Sunday Times
Only a skilled workman can split slate into layers.
Only a skilled workman can split slate into layers.
He was a skilled workman, and paid a skilled workman.

Why can you not attribute to the skilled workman the trade or professional equivalent of Halsbury's Laws of England?
Only a skilled workman can splIt'slate into layers.
unskilled workmanship
But where does the skilled workman or the skilled addressee stand in the spectrum?
The gearbox had to be removed and, as no spare part was readily available and we wanted to get home to Tyrone, the clutch arm had to be welded up and ground to size by a very skilled workman.
And it's not like he makes a skilled workman's decision.