pick/pull (someone/something) to pieces

to criticize someone or something very severely, often in a way that is not fair.

It's discouraging because every time I show him a bit of work I've done he picks it to pieces.

• in line for something
• in line with
• in line with something
• in living memory
• in loco parentis
• in luck
• in memory of
• in memory of someone
• in midst
• in mind's eye
• in my book
• in my wildest dreams
• in name
• in name only
• in next to no time
• in no time
• in no uncertain terms
• in one ear and out the other
• in one fell swoop
• in one piece
• in one sitting
• in one stroke
• in on the ground floor
• in order
• in other words