Mark, long ago I was a turner and used green wood often. I would seal all the surfaces inside and out with some paste wax, reduced latex paint, I used
water reduced white glue (it was on close out at the store) for a sealer. Store your bowl in a paper bag to help slow the moisture loss, inside out of the sun, the key is slow! Expect at least a year for the bowl to dry.
Your pics looked great, you've done a really good job using what tools you had!!! Best of luck to you.
Peace