The big difference with tailwheels is that they won't tolerate sloppy technique. Not-held-off landings or barely-held-off ones are commonly seen being made by nosewheel light aircraft; try that in a taildragger and it'll bounce. And the bounce will be a nose-up one because the mains are in front of CG). So unless you do something (add power at least) the second impact will be worse, and the third will seriously damage the aeroplane.
And of course the CG behind the mains means it's directionally unstable on the ground, so correct and instinctive but minimal use of rudder is required (don't overcontrol!).
So as someone has said, if you have been well taught and your technique is OK, tailwheel will be no big deal. If not, you will have to learn all over again - and properly this time!
