Converted to the Citabria last year. The airport vultures are always well entertained when there's a first time t/d pilot learning how to taxi
Came away from the first lesson with sore calf muscles.
You always want to taxi good and slow, but also need enough speed / momentum to get the beast turning where you want it to go. Fast enough, but not too fast takes a bit of learning.
You first need to become very fussy in your favorite spamcan with precisely tracking the centerline on takeoff and landing with zero drift and a proper holdoff.
Do that preparation and your takeoffs and landings will progress quickly.
The other trick is to be quick to catch any deviations with the rudder while they're still small.
And don't forget that every rudder movement on the ground usually calls for a smaller counter-movement not too long after.
Taming the Taildragger Pilot is highly worth reading:
http://www.ameliareid.com/documents/Taming.pdf