Practice is of course the key to any success.

But you have the right info.

Always taxi while holding full up - not just on take off run.

As it builds speed, relax the elevator and as the tail rises, you now must "Fly the tail" - That is, hold enough UP to counteract the drag of the wheels, and use that rudder to keep it going straight. How much is needed will be different with every plane. The good news is, taking off, is a relatively short part of the flight - providing it's not the entire flight