But all the awesome friends in the world will run out if your critiques aren't all that useful. Fortunately, you don't have to be an awesome writer to give good critiques. You just need to pay attention to what's working (and not working) for you, then communicate that.
The rest is just being nice and professional, like so:
- Don't be a jerk. In particular, assume the author is as intelligent as you are.
- Be positive. Say everything you like about the story, even if it's small. This not only makes the negative stuff go down easier, but it helps the author know what they're doing right.
- Be timely. When someone gives me a novel, I tell the author when I think I'll be done (based on life and my normal critique speed). I'd also tell them if I wasn't going to make the deadline for some reason, but so far it hasn't happened.
- Know what the author wants. Is the manuscript a first draft doomed to revision? Then maybe don't nitpick grammar and spelling so much. Are you the last reader before an agent? Maybe you shouldn't suggest sweeping changes (unless you feel strongly about them, of course).
- (Optional) Use Track Changes and Comments within the document itself. Obviously this depends on what the author wants, but I've found MS Word's features (and many other word processing programs do this as well) to be the easiest to track. I will always use them unless the author can't read them for some reason.
- And one more time because it's so freaking important: DON'T BE A JERK!
So go out there and be good critters. Seriously, if I hear one of my blog readers is being mean out there, no more Thai food for you!