I retro fitted my fabric headliner car with an overhead console and learned A LOT about these in the process.
As mentioned previous, there are the screws at the front for the lamp set bezel, the two screws in the domelight retainer, and then there are 4 or 6 wire retainers that hold the body of the o/h console in place. Once you have the screws out at the front and rear, the console should come down by carefully pulling pulling on it. Revs pics show the clip locations.