A pattern like this might be a viable option for the bedroom.
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Dealing with a hall that enters a room with a coffered ceiling.
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Another room with an irregular shape.
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Another option for a ceiling in a room that is not square.
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A pattern such as this that runs parallel to the perimeter of the room might be an option. I'm not sure the room is big enough to make this work in a visually appealing fashion.
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I like the "shape" or detail of each beam.
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Another way to deal with the corners.
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I kind of like this design if the room has parallel dimensions to make it look right.
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They used a curved beam in the corner to deal with a hallway.
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The perimeter of this room is similar to the perimeter shape of the master bedroom. I think this design might make the most sense. If there isn't symmetry of each of the corners, this design may not work.
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Diagonals might be another option for the master bedroom.
This design might work.
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