First you need to trim the bottom of the bowl flat.
Trim the slope of the side smooth from foot to body of the bowl.
Unfortunately, when I went to remove it from the wheel, I compressed the side, warping it. And once that happens, there's no way to recover it to round.
So I did what one of my teachers taught me. I hit it with a stick.
In writing, the first draft is the just-thrown bowl. You really can't do much with it. It needs to dry, to set up so it can be shaped into something finished, something able to be used. While a piece of ceramics will reach that stage in a day or two or three, a first draft story often needs to sit for weeks or months, letting time pass between the writing and the revising so that the writer can approach the work as new again.
Revising a manuscript is the act of shaping and altering. And just like something doesn't work out exactly as you'd planned, you can hit your story with a stick. Metaphorically, of course - turning it into something that may be quite different than your original conception.
And that's okay.
Not all bowls need to be round.