Pick the Room
The centerpiece can be placed in any room and the size and other requirements will greatly depend on the room it is placed in. The first step to take is to decide about the room you want to add it to. Once this is done, you will be able to move forward.
The next step is to generate ideas and think about all the winter related things that can be used in the centerpiece. There are many options and you can have something that reminds of snow, holidays and the New Year as it is just around the corner at the start of the winter. Generating ideas will help you in getting a clear idea of what you want to do.
Once you have had your options chalked down, move forward and pick the ones that will suit the room according to the current decor and colour scheme. This is crucial as a perfect yet out of place centerpiece will never look good and will never go with the scheme of things in the room.
Depending on the size of the room, select how big or small you want the centerpiece to be. Make sure that it does not occupy too much space as it will make the usefulness of space in the room a lot less if it is too large in relation to the total area. Have a decent size that goes well with the area available.
Keep it Simple
Make sure that you keep it simple and do not add too much to it which can make it look just a touch overcrowded. Have an attractive winter themed centerpiece that occupies just the right amount of space and has the right amount of objects added to it.