Piercing looks good. What did you use for the piercing? I'll agree that the base needs to be a little smaller. Also what about a small pierced lid to top it off. Just a thought.
I used a dremel tool with a 1/8" cylindrical diamond-studded bit (well, it SAYS it's diamond studded but I bought a box of about 25 of them at HF for about $20 so I'm dubious). I make surface gouges like little channels, about 1/4" long and work them down to where they go through then turn the tool perpendicular to the surface and open up the hole.
For some reason I have a personal antipathy to lids and never do them.