I've been trying to model this little claypot, I'm kind of a newbie here, and whilst making a clay texture I added this cloud type texture, which happened to add little weird lumps on top ring of the pot, and i also seem unable to make the outer ring a bit thicker too :( Would appreciate if someone told me how to fix it. Also, got problems with the mesh made by using a grease pencil, it gets insside of the pot when applying scale, which also makes lumps weirder. link for a file https://drive.google.com/file/d/1QDcW5W3o1dQyU9gXVwXATvE7mE25CDik/view?usp=sharing
There may be other precise methods, as this one eliminates some of the "artisan imprecision" (displacement, distortion) you would be looking for around the top. Assign most of the vertices to a vertex group:
And then use this group in the Vertex Group field so that these edges aren't included in the Texture displacement:
I think this is at least better than a half solution. You can try either of 2 V-groups. Also, you may find that Weight Painting or weighting LT 1.0 as you assign vertices closer to the top, may improve the subtle result you are hoping for.