skilled penman
「手書」 has another reading with different meanings.
地元で知られた手書きに頼んだ。
I asked a locally known penman.
その手書きの書いた看板は見事だった。
The sign written by the skilled penman was impressive.
手書きとして認められるには長い修行が必要だ。
It takes years of training to be recognized as a skilled penman.