Hmm, nothing too much, just...grammar! There weren't any pressing problems, I'm just guessing english isn't your first language, as there were just plain, random errors! There weren't too many, but they weren't identifiable. Do try not to fall into the style of starting every sentence in the overview with "on the other hand," "however," "although," "even though," as it got old after a couple times.
Hey sorry if I came across as harsh with my GP check. I know this is your first analysis completed, but taking a quick glance through the standards goes a long way in future writing. That way, it's less stressful on the GP team when dealing with analyses to do!