I had to submit my first story three times before it was approved. Why ? Because I didn't pay attention to the instructions. Honestly, the first draft was terrible. After it was rejected I re-wrote it and paid close attention to punctuation. The second time I submitted it I had double spaced something in almost every other sentence. Finally I carefully read the reason for rejection and then edited accordingly. Save yourself a lot of aggravation and do it right the first time. As they say, "If all else fails read the instructions." Believe me you will still make a few mistakes but everyone does,even the best writers.