Also as for judging contrast, it is tough sometimes to translate a successful print you made on 8x10 to 11x14 or larger. Different dodging and burning may be needed where it wasn't in the smaller size. I used to try to make a final on 8x10 then simply translate up to a larger size and what I've recently discovered is I just end up re-discovering the negative again and end up doing everything from the beginning anyway. So what I do now is if I want to print to 11x14 I just go to the darkroom and start at the size. Saves me time in the end.