Hello Aspirant,

First of all you have to qualify neet and fill the application form of Karnataka MBBS admission for being eligible,
These applied  candidate will be included in the provisional merit list of karnataka, then from this step you can follow the regular process of documents verification and allotment lists and so on...
You can refer the link given below to know the complete process of application in karnataka:-

https://medicine.careers360.com/articles/karnataka-mbbs-admission

I hope the above information is useful to you,
All the best!