I love your video! But do you maybe know why my cloth goes through the bed PARTIALLY? I have the bed set as a collision object, but the edges of the cloth go inside the mattress part, and not wrap around it like in your video :(
When im trying to edit the edges of the blanket as a plane, i cant add lenght to it, it modifies the same thing. See 6:36, instead of adding length to it, it modifies the same edge.