i have some triple black velvet. You think that works ok on the ceiling with tacks?I don't know of any actual "Black Velvet" material that comes with a pre-applied Adhesive backing...only Pseudo Velvet (Felts) and none of those come in anything over 6" wide.
If done with some degree of care, hanging the Black Velet normally suggested (Plush Triple Velvet from SyFabric) using simple Thumb Tacks works for both Walls and Ceiling. Simply paint the Thumbtacks Stain Black and the essentially disappear.
The suggested Velvet has some degree of stretch to is, so it can be made to be absolutely Flat on the Wall...no wrinkles, yet the stretching isn't enough to pull out Tacks. You get an excellent and perfectly flat, totally light absorbant surface
I would not suggest the Protostar for 3 reasons:
Difficulty in application
Dependability of source.
I did used to be an PotoStar advocate, the 1st two reasons above could be accepted. But when they started getting squirlly as far as answerring the Phone & Emails, and also not delivering product in a timely basis, that made the stuff much less desirable....