Why do I have pocket holes in my new texture ceiling?
The miniscule openings you notice are from air trapped in the joint compound (knock down). It occurs when the compound is stirred or mixed rapidly or with a mixing paddle meant for a different material. Bringing the paddle blades out of the compound when mixing will add air. It may also be occurring if the surface has been previously painted or sealed. If the air in the compound can't penetrate the sealed drywall surface it has no other direction to go, but up through the compound. Some people claim that adding small amount of dishwashing soap decreases the air pockets by decreasing the surface tension, but I can't vouche for this .      Mixing slowly will decrease the air entrained compound. The simplest way to remove them is through sanding and then applying a lightweight compound over the holes.