Hi Jenny,
1) You can cut it out or just simply turn it so that the facet you need is on top and the other below.
2) I think you don't need to worry about the center of the room. Just look up the stars in general for your room and don't worry about the center stars. If you happen to have a disaster or illness star in your bedroom and you need a wind chime as a cure then you can place it in the respective area of your bedroom. For example, let's say you have a 2 and 5 in your Southeast bedroom, then place a windchime in the Southeast corner of your room. I guess that your bedroom is not in the center of your home, so just forget about them.
3) Moving water is too yang for a bedroom, therefore we use the color. For example, if you have a Southwest bedroom with the stars 8 and 1 then place a blue image, maybe of moving water in the Southwest corner of your bedroom.
4) You can use the living room if you have missing sectors or an abundance star that is flushed away in the bathroom or kitchen (or if you want to place your cards or the facets). But I feel it's more effective to activate the energies directly in the respective sectors (and it's even better to use the respective corner or wall for the activation in these sectors). If you have to place a wind chime or a bubbling fountain in the sector of your dining room - do it there. If you place too many activations in one room the energy might get scattered or confused and you have to put more effort into the activations. And you don't know what will happen - maybe you feel inclined to use the dining room more often after you placed your cure/activation there.
Good luck!
Astrid
