Jisho

Your sentence doesn't sound very natural at all. I can't exactly correct it since I don't know what nuance you were trying to give.

余計 often has a pretty negative connotation (though not always), especially when used as a な-adjective. It's most commonly seen in sentences like 「余計なことを言うな」, "don't say too much"; and 「余計な世話だ」, which is a sort of warning to stop someone poking their nose in someone's business.

Here's another example:
「余計な謙遜は必要ない」 "There's no need to be so modest" -- here the sentence itself isn't negative, but it's saying the modesty is 'too much', unnecessary,

余計な料理人