I think the most important thing when it comes to editing is making sure the question is readable (good grammar and punctuation) so it looks presentable. Get rid of all the text speech. Changing equations is another way to make questions look good. Sometimes there are formatting errors.
The next thing that may be a little hard to do is eliminate first person speech (if its a question that is worthy of making it look professional). In doing this is helps the editor be a better technical writer. In academic and technical settings first person speech (pronouns) are harder to read and not necessary.
I sometimes rewrite the answer and provide a specific question to make it more readable.
If the OP objects to this, they are more then welcome to edit their own post. More often than not, it's easier to edit the post than it is to let them edit it so edit away.
