Balance - an even distribution of weight enabling someone or something to remain upright and steady.

Variety - the quality or state of being different or diverse; the absence of uniformity, sameness, or monotony.

Harmony -.the combination of simultaneously sounded musical notes to produce chords and chord progressions having a pleasing effect. 

Emphasis - special importance, value, or prominence given to something.

Proportion - a part, share, or number considered in comparative relation to a whole.

Pattern - a repeated decorative design.

Movement - an act of changing physical location or position or of having this changed.

Rhytm - a strong, regular, repeated pattern of movement or sound.