A good idea is to try design programs to create a virtual bathroom, as they have a lot to offer in the sense or stile and grace. Whatever the look you are wanting you can start to build a unique data base of information to help you get started. Or you could get a bathroom designer to give you assistance with the layout and style you are looking for but this can be pricey.
You want your bathroom to be like your kitchen i.e. a place to prepare yourself to go out and go to bed so some side unites may be in order. It is also a place for you to be able to relax after a stressful day so you want a mellow color to set the mood.
Bathroom decorating can be a lot of fun as you have the opportunity to incorporate copper, gold, silver, or the good old fashioned plastic i.e. taps and accessories to personalize your bathroom. It is a good place to start before you buy your bath tub or shower and sink, the towel rail and mirror can also be got in those same colors,
Next if you are not the sort to paint your bathroom you may want to tile the walls, there are a lot of styles you can choose from and they can be quite exquisite, of you can have the outdoors look with pine tongue and groove walls just remember these need to be in a well lit room and also need a lot of ventilation as the steam would soak in to the wood.
The flooring should be in your mind, for bathroom decorating tiles can be a great asset in the bathroom but can be dangerous, carpets are the most used in bathroom decorating and again can be quit effective if you pick the right color to match the rest of your walls.
Next we have the lighting should you have wall mounted lights or ceiling lights well either is ok but it would set off your bathroom if you installed a dimmer switch to give you the light you need for the mood you are looking to have.