not able to digitalize object

[SimbiosiGT]

I start to play with Meshroom 2021.1.0 the piece was black and I didn't manage to capture the object so I painted white but obtain no result.
I can digitalize the entourage but not the object intended with 18 shots with DSLR.
Could you advise what I doing wrong?

[natowi]

Try splash paint it with water colour for example or draw on it with markers. Pure white is as bad as pure black :) Also get far closer to your object.

[SimbiosiGT]

Thank you will test more