Hi ellerstak.
To increase your quant score, you can keep strengthening weaker areas and also work on improving overall accuracy.
For some powerful tips on improving overall accuracy and reducing the number of careless errors you make, see this post.
Improving Your Accuracy on the GMATRegarding verbal, I think you can get from the following video some insights you can use to increase your verbal score.
Once you've read that post and watched that video, you can use the TTP Streaks Method discussed toward the end of this post to practice in a way that will almost certainly result in your scoring higher on test day.
The Best GMAT Practice Methods