I thought faders on an audio mixer for the first,possibly better without them.
The second with it's blue and white reminded me of my late grandmothers stash of souvenirs,possibly with windmills from holland.
But this pot has a powder blue matt finish and a great stippled? finish on some of the smoother surfaces,the crags and fissures i could live without as to me it suggests Hyacinth bowl.
However,Hyacinth bowls could bring in the money!
I tried imagining this effect located as a distinct stratification layer around the foot of the pot but i'm not convinced.
Number three at first seems wrong,these rocks and boulders sticking out the side look strange in blue,maybe some other colour?
The Blue there looks like it's been applied straight from a bottle of paint.
The next two i find difficult to judge as the pots are novelty shapes and sizes.
The last image i suspect is the miniaturising of an effect.
I tried to write my impressions as i saw them.
I add a bit more as the words came to me,sticking out is okay but jutting out is better.
Some of these protrusions of pot three are on the verge of to Jut,it's better.
To go beyong relief,to jut.