hello aspirant,

it's nice to know that you have completed the course and congratulations for your national karate certificate. the options that are available for you after the course are-

You can give NATA and go for B.Arch (regular) Apart from that you can also do Architecture Engineering or bachelor of engineering.

You can also go for some diploma courses of Interior Designing or other software courses to enhance your skills but B.Arch will be the best option.

hope that helps