It can look good or bad. I'm not a fan of huge gauging. I'm at 6 right now(The size of a Q tip with no cotton). I'm thinking of going to 4, but no more.
When you get your ears pierced with a normal needle or god forbid a gun(These are terrible to get pierced with) the size is normally 20-22.
I was stupid when I did mine before. I had my left ear gauged to 10 and wanted bigger. I pierced my right myself, went immediatly to 10.(This was at night) The next morning I did both of them up to 6. I'm lucky I didn't get a blow out.
Post pics when you do it!