It seems that most of the new users are afraid when, after posting their very first question, someone welcomes him, saying:
"Hi man... please add more details and the efforts you did to solve your problem..."
Indeed, I think that new users aren't aware of the "Edit" button that they can use to edit the question.
I have a proposal...
Inserting the option "Suggest edit" when adding a comment to an answer
When a user receive a "Suggest edit", there is something that catch his attention, so there will be no reason not to see the "Edit" button.
Of course, this must be adjusted in someway. For example, not all users may have the right to send a "Suggest edit", this privilege must be conquered.
What do you think about this?