I really like this cabinet. It's very pretty. 
I almost returned it. It wasn't until I put another piece together that I discovered that the instruction manual isn't correct. 
The cam screws must be SCREWED into the pre-drilled holes before placing the pieces with the cam locks over the screws to tighten.  It's not possible to tighten the cam locks and screws without the first step of inserting the screws in the pre-drilled holes.