This is my first attempt to turn a natural edge bowl. The wood is cherry at about 19% moisture content. I have roughed out the bowl around 1" + thick, 12" diameter and sealed it. I probably should have asked before I ever started, but was in the shop and decided to try it. My questions at this point is what to do with the bark, hoping it stays on. Or what should I have done? From the picture you can see greenish spots and natural debris. I did not put sealer or anything else on the bark at this time. How and when do you clean it? Do I seal it with shellac or anything?