I prefer to only allow people to edit my questions after I confirm the edit. How can I do this?
Editing other peoples posts is a privilege earned at 2000 reputation. It's a major part of the site because this site (and all other stackexchange sites) is about getting the best answer to any question anywhere on the internet. To this end, if you've earned enough reputation, then you're trusted enough that any edits you put out are for the good of the question/answer.
Anyone with less than 2000 rep can still submit an edit, it will have to be approved by other people on the review edits page.