Fly with no wind and practice your takeoffs.
Let the engine to warm up nicely but be aware of your gauges not to burn it, don't trim the elevator, only trim the rudder about 5 degrees to the right.
On takeoff - When you increase the throttle do it gently (very gently). The aircraft can lift off very easy (it's a fairly light aircraft with a very powerful engine) and the runway is long so you have plenty of runway to compensate and control the takeoff.
As others said, let the tail to rise by it's own and then after a few seconds gently again raise the nose just a bit, the plane will fly off the ground easily.
The trick is to increase throttle very gently at takeoff.