The December 11th New Moon at 19 degrees Sagittarius can launch something big. At least, that's what the potential suggests.
Sagittarius is the sign of expansion, exploration, new territory and faith. The Moon will be enabled by a trine to Uranus Rx in Aries (at 16 degrees) and a square to Jupiter in Virgo (at 22 degrees). Jupiter will raise the sakes with extra details and knowledge. Uranus will encourage the drive for freedom, and will have been activated the previous day with a risky opposition to Mars in Libra. Mars will also be sextiling this Moon, adding even more initiative.
It all feels big and hopeful. And it will be. But, a square from Jupiter is a discordant aspect. That means the details (Virgo) will either be excessive, or will not quite fit with the new scenario. There be questions about big promises versus the truth. Or justifying a situation even though all the facts don't quite add up. Sag can become fanatical as the push to sell overwhelms what's really happening.
Also on December 11th, we have an exact trine from Venus in Scorpio to Neptune in Pisces (at 7 deg) and an inconjunct from Mars to Chiron in Pisces (at 17 deg). This suggests a background blend of endless love/creativity/romance (Venus/Neptune). But also a reminder that the abrupt actions (Mars) that preceded this Moon will hit on something doubtful (Chiron). Note that this Moon will also square Chiron.
Overall, new developments around 19 degrees Sagittarius in your chart will offer something valid to run with. There will be room to grow, and you should definitely check it out. But keep observing and questioning, even as you get caught up in the beautiful story that's unfolding. Read the fine print, and don't take it for granted that everything will unfold as promised.
If you have anything from 16 to 23 degrees of the Mutable signs you'll feel this Moon most strongly. 16 to 20 degrees of the Fire signs will also feel it to a lesser extent.