You know what would absolutely guarantee raising your number? -Go back to giving your buyers positive feedback like you used to, however longer ago than a year it was since you stopped doing that. In many cases it's a buyer seeing that you gave them feedback which reminds them to return the favor! You've sold 54 items since December -that's 54 wasted opportunities to not only get in-kind positive feedback but also potential repeat customers. You could just copy-paste the same comment to all of them and have it done in 5 or 10 minutes.
