I don't think I've ever made a print that I thought worthy of framing that doesn't need at least a bit of simple dodging and burning. I'm not familiar with Per's technique of selective warming though. Of course it's really nice to start with a negative that doesn't need much, but on my negatives there's always something that needs lightening or darkening. I'm not good enough at it to do the complicated stuff I've seen "mapped" in books etc.