So far, I usually just print the full 4x5 neg. Today, I developed a neg that was shot in Florida late last year. I saw this BIG yellow/black field spider just chill'n out. So I print the full neg, which shows the background and the spider, but the spider is kind of small relative to the over all shot.
For what ever reason, I think Hey. Crank up this enlarger to as high as it will go, and print the spider BIGGER
Now I have something else to keep my eye on. Really cranking in on some of my negs to fill the print with something possibly special -vs- just printing the whole neg.. I've never thought about "zooming" in on a neg for a different perspective.
Just too cool.