Why are you always all thumbs?

你怎么总是笨手笨脚的？

I seem to be all thumbs today.

我今天显得笨手笨脚的。

He is all thumbs with cooking.

他对烹饪一窍不通。

My fingers are all thumbs.

我的指头都成了大拇指了。

My fingers are all thumbs.

辄我的指头都成了大拇指了。