Diana founded her artist studio in 2006. She has successfully completed over 100 visual-arts-projects since 2000. She has been selling original art, illustrations, copyrights, prints, providing illustration, design, and restoration services. A three-month-internship was completed at the Central Conservation Section, LCSD, Hong Kong in 2002. She has provided the twentieth restoration service of holy statue for the Catholic Diocese of Hong Kong since 2003.

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關氏於2006年成立個人藝術工作室。自2009年，她至今已完成了超過100個視覺藝術的計劃。關氏售出個人藝術作品、插畫、印刷作品，亦提供插畫、設計，以及修復服務。關氏與2002年於康樂及文化事務署文物修復組完成了為其3個月的實習。自2003年，她為天主教香港教區雕塑提供了二十次的修復工作。