Get feedback. Even professional writers get feedback from editors or other professional writers. If the professionals - people who are paid to write - get feedback, why not you?

寻求反馈。即使专业作家也向编辑或其他专业作家征求意见。如果连专业作家，那些获得稿酬的人，都寻求反馈，你为什么就不能呢？

youdao

If you are selling your property, why not call us for a free valuation without obligation.

如果你打算出售房产，为什么不打电话让我们做个免费的评估呢。

《柯林斯英汉双解大词典》

Why not have a day off? I'll hold the fort for you.

干吗不休息一天？我来为你代管。

《牛津词典》

I did not understand. "But,Dupin," I said, "why did you go to the trouble of replacing the letter?

VOA: special.2009.12.26

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

Usually when you know why it's not working, it's obvious what you have to do to make it work.

通常你明白了出错的原因后，很明显你必须让程序正常运行起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Why not you and your intended, too?

BBC: Going to the chapel

And if not, why are you not more directly involved militarily there?

WHITEHOUSE: President Obama and Chancellor Merkel Press Conference

But what I think is that, you know, if you're going to, you know, pass a policy saying that gay boys can join the Boy Scouts, then why not, you know, actually go forward and, you know, why do you have to, you know, half throttle something when you can actually make a big change and send a message to the rest of America?

NPR: Price Too High For Being World's Top Military Force?