The four principles of good design are Contrast, Repetition, Alignment and Proximity. These can be followed if you are designing a poster for advertising purposes or your bathroom.
You may want to add Practicality to that list as with bathroom design you should also take into account the space you have to play with. There is no point, for instance, in buying a giant bath if you only have a small room.
We have all been in bathrooms where you wonder what the owners were thinking when they designed the room. Why did they put the sink behind the door? Who thought of putting the bathroom cupboard where it is so easy to bang ones head as you enter the room?
Plan your bathroom
At first you need to consider all the practical considerations. For instance, the waste outlets like your soil pipe will dictate where the toilet is going to be situated.
You will then have to take into account the position of the door and the window. You will not want to place your basin opposite the window. The reason being you will presumably have a bathroom mirror above your basin and the light streaming through the window will make your face a silhouette.
Depending on the amount of upheaval you want to create you can move radiators and basins around. Pipes can be re-routed but it will cause your plumber extra work and it will cost you more.
Create contrast in your bathroom
You don’t have to stick to one colour when you design your bathroom. There are some really striking bathrooms that use contrasting colours to great effect.
Black and white bathrooms are very effective. They give off that 1930’s feel and look really stylish. You may want a black floor to contrast with a white bathroom suite. Black tiles around a white bath or covering the bottom half of white walls look really good.
Repetition in the bathroom
If you have a small bathroom you will have to keep things simple. You will probably paint it all white. To stop it appearing too sterile you can repeat light blue in the tiles, towels and bottles. Little repetitions of motifs in basin and bath design are very useful in helping to unify your bathroom.
Alignment in the bathroom
Where you position your bathroom elements is very important. Bathroom storage can be a headache but well positioned cupboards and shelves can help to streamline your room.
Try to position your bath so that it is the focal point of the room. This is especially important if you have a roll top or any other type of free-standing bath.
Proximity in the bathroom
Hopefully you will have plenty of space in your bathroom and you can space out the different elements in an attractive way.
If space is at a premium you need to adapt the fittings so that basin, bath and toilet are not all crowded together.
With these principles in place you should be able to plan a beautiful bathroom.