There is one use of "appears" language, which I mostly panned in a previous post, that actually can be appropriate -- when the character has only an indefinite idea of how to call something they're experiencing.
"In the shadows at the back of the room you see a still figure that appears to be human-shaped" (approach closer and see it's a wooden effigy)
"The vial is full of a fine white grainy powder that looks kind of like salt" (you need to taste it or have alchemy knowledge to find out anything different).
The difficulties in describing this kind of situation are basic to the task of conveying visual information through language. To describe something efficiently you must categorize it. "You see a cylindrical form about two meters high, topped by a sphere, with one long cylinder hanging from each side." That's just a clunky, roundabout, parlor-game way to say "You see a human-shaped figure." But the problem with "human-shaped" is that it forces an interpretation too strongly, while "cylindrical form" doesn't capture the automatic leap to a conclusion that you might experience when you see this feature in silhouette:
When shown and not told, whether drawn on the spot or prepared ahead of time, the visually indefinite can be a powerful stimulus to conjecture and mystery. Consider the following glyph that recent adventurers in the Castle of the Mad Archmage found daubed on the wall in the south of the second level:
Apart from crude drawings, the visually indefinite can be achieved by holding a mask of random dots printed on an overhead projection over an illustration; else, by holding it up at a distance, as I did in the same adventure when the party glimpsed from afar the notorious fountain of serpents, which is illustrated in the Castle of the Mad Archmage illustrations booklet.
Clues first, then revelation, is a general principle that works wonders when running adventures. A wonder or hazard hinted at before provides a strong guide to play, and makes the final encounter that much more satisfying, than if it comes as a complete surprise.
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