Improving Results on custome data

[basit-7]

How can I improve these results? I have already tried changing bbox and near-far. What parameters should I tune?

The images only have foreground with white background.

Command used:
ns-train neus-facto --pipeline.model.sdf-field.inside-outside False --vis viewer --pipeline.model.background-color white --pipeline.model.background-model none --experiment-name xyz --trainer.save-only-latest-checkpoint False --trainer.steps_per_save 1000 sdfstudio-data --data abc/xyz