Cannot hold a candle to somebody/something
Definition 1 of 1
Pro Tip 1/3Historical Origin
This phrase has its roots in the past when apprentices held candles for craftsmen, implying one isn't even qualified to do that. 
She's so skilled with graphics design that newcomers cannot hold a candle to her.
Pro Tip 2/3Comparative Impact
Use it to emphasize a large gap in skills, quality, or ability between two things or people. 
As a cook, I cannot hold a candle to my grandmother; her recipes are unique.
Pro Tip 3/3Informal Use
This phrase is informal and best used in casual conversation, not in formal writing or speeches. 
Our high school band is fun, but we can't hold a candle to the professionals.