YOU SAID:

When I'm good, I'm very good, but when I'm bad, I'm better!

INTO JAPANESE

私が上手いとき、私はとても上手ですが、私が下手なとき、私は上手です！

BACK INTO ENGLISH

I'm very good when I'm good, but I'm good when I'm bad!

INTO JAPANESE

私は元気なときはとても良いのですが、悪いときは元気です！

BACK INTO ENGLISH

I'm very good when I'm fine, but I'm fine when it's bad!

INTO JAPANESE

私は元気なときはとても良いですが、悪いときは元気です！

BACK INTO ENGLISH

I'm very good when I'm fine, but I'm fine when it's bad!