I converted my H9 Xtra Easy trainer from tricycle gear to tail dragger last week and flew it for the first time this weekend. On my first attempt at taking off, I started to get a little "squirly"

and had to back off the throttle, taxi back to the beginning of the runway and try it again. The 2nd attempt was perfect. I held up elevator and a little right rudder and eased on the throttle. Once I gained a little speed I let off the elevator, allowed the tail to come up off the ground, picked up enough speed to lift off, fed in up elevator, and slowly gained altitude.
I have to say it looks so much cooler with the tail wheel set-up.

Anyway, good luck. With a little practice you'll have no problem at all.