If you want your interior decorating to stimulate the senses, you must keep in mind the principles of Balance, Unity and Scale (BUS).  Balance refers to the proper balance or weight distribution of a combination of objects.  When arranging a wall grouping, you want to choose either a symmetrical or asymmetrical balance.  Symmetrical balance refers to arrangements where the majority of the objects within the grouping are placed in even patterns about a focal point, such as sconces around a picture.  When you draw an imaginary line down the center of a symmetrical grouping, each side should mirror the other. Asymmetrical balance is more interesting to the eye, but is more difficult to achieve.  In asymmetrical groupings, items are arranged so that it your grouping is balanced, but the objects on either side of the focal piece are not necessarily the same.  In both types of groupings, drawing a line down the center of your focal point will allow you to determine if you have achieved balance, as the amount of space taken up with accessories on each side of the grouping should be approximately the same.  Unity is achieved by considering all parts of a grouping, including your layout, color, and theme.  Each item should be arranged to create a single, harmonious effect that is pleasing, functional, and relative to the other parts of the room.  Unity can be attained by placing items within a grouping fairly close together, approximately one palm's width apart, so the eye can move easily from one object to the other.  Achieving unity does not necessarily mean that all items must have the same colors or finishes, but rather these items are linked by a common color, theme, or element that ties them all together.  Scale refers to the relationship between all the items in a room.  Scale should be considered in relationship to the placement of furniture within a room.  Objects on the wall must be large enough or small enough to complement the furnishings.  The dimensions of the room, the size of the wall you're covering, and the proportions of your furniture are all important to achieve scale within a room.  See my Home Decor page for exciting additions to your interior decor.  I would be happy to assist you with achieving the look you want in your home.