noun
brushwork; style of brush strokes
Refers to the manner or style of using a brush, especially in calligraphy or painting.
彼の筆付きは力強い。
His brushwork is powerful.
この書の筆付きから、作者の性格がわかる。
You can tell the writer's personality from the brushwork of this calligraphy.
筆跡 refers more to the resulting handwriting or brush marks, while 筆付き emphasizes the manner or style of the brush movement.
Compound of 筆 (fude, 'brush') and 付き (tsuki, 'attached' or 'manner'), literally 'brush manner'.