"My plot and characters are fine, but I need someone to give it a once-over for other errors."
"I need someone to look at continuity and character development."
If you're at this stage in your writing, you need Stylistic and Copy editing. These two are offered separately, but this can be negotiated. I want to help you create to the best of your ability, and beyond.
You're near the end of your process! You will need Proofreading, which looks over the small issues such as minor errors, formatting issues (paragraphs, etc.) and ensuring you have kept to your style guide.
Liar! Or delusional. No work is ever perfect. No novel is free of the dreaded red pen. You haven't caught everything, and I won't catch everything (that doesn't mean I won't get pretty darn close to perfect.) If you're this confident, there's a good chance you need Proofreading to catch those little niggles. If you need a (free) review, you might as well check out my blog.
We've all been there. You have to write quickly in order to get everything out, and going back over everything doesn't mean you'll find all the mistakes you made in your rush of literary genius. You're going to need Copy editing, which will focus on spelling, grammar, and other mechanics of writing. This does not include any points on plot or character development.
"My writing is perfect. There are no mistakes, and it just needs to be reviewed."
"I have a great story, but I'm not so great at spelling/not concerned with correcting it myself."
What You Need
When looking for an editor, it's important to know what you're looking for. To know what you're looking for, you need to determine which stage of the writing process you've completed. Here are some guidelines to give you an idea as to which service you require.