Please don't. Not until you have considered Scribophile.
I have posted my work on many critique forums, some helpful and some horrid. Most of the time, I would either receive a: no reviews at all or b: gushing reviews from people who just wanted me to give gushing reviews back.
Finally, someone critiquing my work in another forum suggested Scribophile. I had been working on my novella for over two years and thought I was almost finished. I had a college English teacher friend and a copy editor check it for errors and I really just wanted an opinion on the creative aspects.
Boy, was I in for a shock! The first few reviews, while complimentary, tore my story to pieces. But when I really thought about their suggestions, I knew they were, for the most part, absolutely right.
So, three months later, my little 17,000 word novella is as ready as it will ever be. It is such a better book because of my friends at Scribophile.
A few helpful hints to get your book critiqued quickly on the site:
Get a Premium membership: It's only 9.00 per month and worth every penny, especially when you price professional critique services.
Be active in the forums. Sometimes people will come check out your work just because you wrote something interesting in the forums.
Join active groups. Choose groups in your genres of writing and join them, just make sure they have recent posts.
Post short sections: Most critique participants shy away from book sections longer than 3000 words.
Post your best work. Only post chapters or stories that you have spell checked and edited to the best of your ability.
The best thing about Scribophile is you will get critiques. You can only post chapters based on your karma points and these are mostly earned by reviewing.
Have you used Scribophile? Feel free to share below! Scribophile's Site