We each play WGT for fun. We all have certain formats that we prefer. From a quick view of your rounds played it looks like you play a lot of CTTH's and the like. But, not that many ranked rounds in comparison.
I would suggest playing practice rounds with different conditions and green speeds. That way you can hit into the rough (yes on purpose lol) or sand to gain experience and round out your game. Discover your strengths and weakness and then work to make each better. Then play ranked rounds or tourneys when you know you will score well to get your average down.
John