Traditional designs are based on early printing practices. Headlines are often centered and there is never any overlap. Heavy Oldstyle fonts (Baskerville, Garamond, Caslon, Palatino, Times) are most appropriate for designs of this style.
Modern Design
In contrast to traditional design, modern compositions have movement and tension. Modern-looking typefaces are usually Sans Serif but you can do a lot of creative stuff by simply juxtaposing font sizes, color, orientation and so on.
Elegant Design
Elegance in design comes from simplicity and not from the saturation of decorative elements. In plain language, you can be pretty without using too much makeup. Let the fonts do the talking. Transitional typefaces (Bodoni, Didot) work very well for elegant occasions.