I'm not picky. I'll eat anything.

I'm not fussy.

Tom is quite fussy.

He's picky about suits and ties.

In reality, translation is akin to working for peanuts, since the corresponding meaning of something in one language is often hidden in some deep and impenetrable recesses of the other. As a result, the translator is forced to search all over... Never mind that the picky reader is very difficult to fool.