Nice! Make sure you match the tenses. We tend not to use 'surely' unless there is some doubt about an action or describing specific actions which show affirmation. E.g. 'Surely you won't ...' or 'He nodded surely'. You also can't say that you fell asleep 'very well' because we view falling asleep as just going from awake to asleep; like flicking a switch. Therefore, it's not an action that can be done good or badly. Hope this helps! Keep up the great work! :)