get one’s feet wet
新しい事を始める、手始めにやってみる
Ex
- I got my feet wet as a writer.
Reference source
- http://www.berlitz.co.jp/wm/06atwork/1031.htm
- https://eow.alc.co.jp/search?q=%22%5Bget%5D+%28one%27s%7Cmy%7Cyour%7Cits%7Chis%7Cher%7Cour%7Ctheir%29+feet+wet%22