artist?
An artisan
Developing a reputation for skilled work is the best way for a craftsperson to advance his or her career.
Craftman are what workers trained in a specific craft are called.
wordsmith
another word for a diary
If you are referring to the "Harry Potter" books by J.K Rowling, Harry was a fictional character with the powers of magic and wizardry. If you are referring to the word "potter," it refers to a skilled craftsperson who is able to make vases, bowls, pots, jars and other items, usually out of clay.
Adept is a synonym for highly skilled. Able is another synonym for highly skilled.
Usually it would be an 'Artisan' or 'skilled trade' .
Skilled, agile, nimble
expert
The word 'fundi' comes from Swahili, an East African language. In Swahili, 'fundi' means craftsman, artisan, or expert in a particular skill or trade. This word is commonly used to refer to someone who is skilled in their craft or profession.
Other words for "proficient" are "competent" and "skilled".