Did I check for capital letters?
Did I check for full stops and other punctuation?
Did I work neatly? (in other words; will my teacher be able to read this?)
Did I use the right salutation? (aanhef)
Did I use a right closing sentence? (slotzin)
Did I use the right ending? (afsluiting)
Did I check all the boxes?
Did I use paragraphs properly?