What a great quilt. The kids did a great job and you did too. The quilting on the red is perfect but I do think I’d add some more stitching in the squares. You could outline the figures (gingerbread man, snowman, etc ) and stitch near the snowflake and others. I think it would hold it together better but as others have said, check the batting package for how far apart you need to sew. Maybe you don’t have to do anymore.