[Ptchd]

Just one thing, Is it possible to modify the vase "lip"?

[trikko]

I do not understand. What do you mean exactly?

[Ptchd]

this part: https://i.imgur.com/ab53RLa.png

ie, having the ability to make it less sharp,etc

[trikko]

I think I would left to postprocessing, just like infill.

It's quite easy to do with any modeler, I think.