For a 19-day-old site, I'd say those numbers are actually encouraging. An average position of 11.6 means Google is already testing your pages, and 7.5K impressions in under three weeks is a good sign. The only metric I'd focus on improving is the 0.4% CTR. That's usually a title/meta description issue, especially if you're ranking around positions 8–15. As those pages move onto the first page and you improve your titles, the clicks should increase. I'd keep publishing content and avoid making major changes this early. The trend looks more important than the raw numbers, and yours is heading in the right direction.