If you can, always try to make a straight grade 2 print with no dodging or burning, fully dry it and then sleep on it, look at it the next morning. The reason I say this is that you are essentially taking the photo again, only this time you really don't have the distraction of color in the viewfinder, it is now truly black, white and everything in between.

Deciding how a final print should look is just as personal as when you made the photograph and a well exposed and correctly processed black and white negative will have far more possibility in it than you might initially realize.