“指手画脚”，意思是一边说话一边比画，形容随意发号施令或乱加批评（make indiscreet remarks or criticisms）。而“喜欢指手画脚的人”可以翻译为“backseat driver”，表示someone who tells others how to do things；a person who interferes in affairs without having knowledge, responsibility, or authority for doing so”。
- 尽管玛丽能独自完成这个项目，约翰还是忍不住指手画脚，告诉她该怎么做。
Although Mary was capable of completing the project on her own, John couldn't stop himself from being a backseat driver and telling her what to do. - 别再缠着我提你的建议了。没人喜欢指手画脚的人！
Stop pestering me with all your advice. Nobody likes a backseat driver!
