The cap for the ornaments was tough to put on level and glue. I created a 4mm internal standoff in the cap. Now it's always level and much easier to glue. It also creates a gap for a hook or ribbon.
UPDATE:
I discovered the gap was a wee bit too small to fit some metal hooks without distorting them to fit. I redid the model and added 1mm to the gap. I've left both versions, in case someone prefers the original.
The author remixed this model.