YOU SAID:

I may be bad but im perfectly good at it

INTO JAPANESE

私は下手かもしれないが、完璧に上手い

BACK INTO ENGLISH

I may be bad, but I'm perfectly good

INTO JAPANESE

私は悪いかもしれない、しかし私は完全に良いです

BACK INTO ENGLISH

I may be bad, but I'm perfectly good