hold the stick slightly back while speeding up, using only the brakes lightly to keep it straight.
1-2 notches of flaps might help, thats personal preference imo.
once you hit +100kmh let the stick go to neutral position , the backwheel will lift and then apply right rudder.
it does take a few times to master but once you got the hang of it , just try be gentle with the controls and throttle.