I have three thoughts.
First, the “n’s” really bugs me. Take out the apostrophe so that, hopefully, the “n” and “s” will connect. If they don’t, kern them so that they do. Set the apostrophe on its own and tuck it down where it belongs.
Second, for those unfamiliar with the Lyrics sacra Children’s Choir, it would be nice to know a little bit more. Not much as this is a poster, but something along the lines of “kick off the holiday season with a festive mix of Christmas favorites” or whatever. Right now, you’ve announced the event, but you have not given me a convincing reason to attend. Also, maybe a line about tickets, registering or say “free, and open to the public.”
Third, the photo is only so-so. It appears to be sharp and well exposed, but, with everyone in street clothes and what appears to be an office, it looks a little unpolished. I would like to see the kids in matching clothes on a stage.
On the plus side, the layout is nice, and the info that’s there is presented clearly.