RE: 1/4 scale USA Balsa Army Piper Cub landing
If you perform a full-stall landing and the tailwheel touches slightly before the mains do, you've made a good landing. When I was learning to fly full-size airplanes, I was learning to land a Piper PA-11, one of the Cub-series of airplanes and a tail-dragger. If I landed and touched tailwheel first, my instructor would call it a "good Navy landing." He mentioned that it would be hard to get into trouble with landings like that.
If you touch mains first in a tailwheel airplane, you'll bounce...can't help it, unless you're deliberately performing a wheel landing. If you come in a bit slow, you'll usually not have a good flare to landing so adding a bit of power as you flare can help. Landing faster doesn't really make for better landings, but you do have a bit tighter control during the approach, and more control authority when you flare. Howevere, you still have to bleed off the speed to get the model properly settled on the ground.