Translation of "Finishing" in Chinese

I'll add the finishing touch.

我将增加画龙点睛的功能。

I add a few finishing touches.

我加上一些最後的潤飾。

Finishing the report by tomorrow is next to impossible.

在明天前完成报告几乎是不可能的。

- I read the book after I had finished my homework.
- This is the book I read after finishing my homework.

我做完我的功课后，就读这本书。