Rebuilt the whole piece in TurboCAD. Rounded edges, added a compression rib and tapered in the mouth.
Also included is an openSCAD script to personalize with a name or initials.
Added another packer with a leaf on it. Scaled a keyring from https://www.thingiverse.com/thing:2266525 and combined.
BTW, the ellipse cylinder is needed for the openSCAD script.
I used a 15 line brim.
I also used 2 perimeters with 0.4 nozzle.
Remove the brim and clean up mouth with sand paper or scrape with a knife.