In the book it says set an attitude (eg. 12-15 degrees on the a/h) to give the required airspeed for takeoff.
Having a target attitude for rotate is very important. It will serve you well one dark and stormy night in the future. If you are too fast when you get to your target attitude it may mean that your rotate is too slow. ( without knowing the type it is a bit hard to give more info). Tell us the type and then those familiar with it can help out a bit more.
As PM it can get your attention if the PF continues to lift the nose through the target attitude which can then become a minor distraction as you go about raising the gear etc.