How To I get the scratches out

[Constance von nuvelle]

Hello I wanted to know if anyone knows how to get the scratches out of my katana and see the hamon again?
Here the pics links

https://ibb.co/Yj0MsXH https://ibb.co/LJSCW8k https://ibb.co/Km92Kyc

Note i only speak english with translator

 

[Hengelo_77]

If it is an expensive katana, have it done professionaly

 

[john april]

it needs professional polish.