Well im relatively new, and I always state this before we fly, its part of my brief to the capt. Im still slow at running flows at times. So I always ask if I can run the before take off flow early. Ive had a couple tell me no, then tell me to run it too late and preceed to yell at me when we are not ready at the end. Then I had a captain close the cockpit door for me but it never latched. So it was hitting the lock on taxi and clicking and I got yelled at for not locking the door. I had a real bad experience today that ill have to PM you with the details. Its been a lot of little stuff but it really sets the mood for the whole trip.