system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who] What if a Weeping Angel hid under a blanket?

If the angel were completely covered, then technically, you wouldn't see it, you'd see the blanket.  Would it then be able to move freely even if you were staring.  (It'd have to stick its hand out a little to get you, but that wouldn't be too hard to do, would it?)
gpt
Probably nothing. Remember the stone thing is a defense mechanism, which now scares me.  That must mean there is a predator that eats Angels.  What must that thing be like....

Anywho, if anything a blanket would draw more attention to them.  Maybe a Count Magpyr of Angels could force themselves to make it work since there seems some control over the power, but that would be extremely rare if not impossible.