Writing a critique involves more than simply supplying a thumbs-up or thumbs-down
Brain Break (English Class)

How to Perform a Useful Writing Critique

Writers help each other out (or they SHOULD). And one of the biggest services is supplying critiques. But if you aren't familiar with best practices, you could end up doing more harm than good to your writing buddies. So let's review how to review a manuscript from start to finish, shall we?